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feat: add pig-latin exercise (#812)
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‎config.json

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"practices": [],
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"prerequisites": [],
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"difficulty": 5
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},
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{
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"slug": "pig-latin",
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"name": "Pig Latin",
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"uuid": "e4242a6e-3611-4f49-890b-368f1ebbdc94",
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"practices": [],
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"prerequisites": [],
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"difficulty": 4
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}
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],
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"foregone": [

‎exercises/practice/pig-latin/.docs/instructions.md

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# Instructions
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Implement a program that translates from English to Pig Latin.
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Pig Latin is a made-up children's language that's intended to be confusing.
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It obeys a few simple rules (below), but when it's spoken quickly it's really difficult for non-children (and non-native speakers) to understand.
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- **Rule 1**: If a word begins with a vowel sound, add an "ay" sound to the end of the word.
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Please note that "xr" and "yt" at the beginning of a word make vowel sounds (e.g. "xray" -> "xrayay", "yttria" -> "yttriaay").
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- **Rule 2**: If a word begins with a consonant sound, move it to the end of the word and then add an "ay" sound to the end of the word.
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Consonant sounds can be made up of multiple consonants, such as the "ch" in "chair" or "st" in "stand" (e.g. "chair" -> "airchay").
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- **Rule 3**: If a word starts with a consonant sound followed by "qu", move it to the end of the word, and then add an "ay" sound to the end of the word (e.g. "square" -> "aresquay").
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- **Rule 4**: If a word contains a "y" after a consonant cluster or as the second letter in a two letter word it makes a vowel sound (e.g. "rhythm" -> "ythmrhay", "my" -> "ymay").
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There are a few more rules for edge cases, and there are regional variants too.
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Check the tests for all the details.
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Read more about [Pig Latin on Wikipedia][pig-latin].
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[pig-latin]: https://en.wikipedia.org/wiki/Pig_latin

‎exercises/practice/pig-latin/.meta/config.json

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{
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"authors": [
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"vaeng"
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],
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"files": {
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"solution": [
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"pig_latin.cpp",
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"pig_latin.h"
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],
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"test": [
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"pig_latin_test.cpp"
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],
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"example": [
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".meta/example.cpp",
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".meta/example.h"
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]
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},
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"blurb": "Implement a program that translates from English to Pig Latin.",
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"source": "The Pig Latin exercise at Test First Teaching by Ultrasaurus",
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"source_url": "https://github.com/ultrasaurus/test-first-teaching/blob/master/learn_ruby/pig_latin/"
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}

‎exercises/practice/pig-latin/.meta/example.cpp

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#include "pig_latin.h"
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namespace pig_latin {
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std::string translate_word(const std::string& word) {
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for (const std::string start : {"a", "e", "i", "o", "u", "yt", "xr"}) {
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if (word.substr(0, start.size()) == start) return word + "ay";
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}
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for (const std::string start : {"thr", "sch", "squ", "ch", "qu", "th", "rh"}) {
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if (word.substr(0, start.size()) == start)
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return word.substr(start.size()) + start + "ay";
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}
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return word.substr(1) + word.front() + "ay";
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}
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std::string translate(const std::string& phrase) {
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size_t start = 0;
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std::string translation{};
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for (size_t found = phrase.find(' '); found != std::string::npos;
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found = phrase.find(' ', start)) {
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translation += translate_word(phrase.substr(start, found - start)) + " ";
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start = found + 1;
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}
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if (start != phrase.size())
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translation += translate_word(phrase.substr(start));
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return translation;
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}
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} // namespace pig_latin

‎exercises/practice/pig-latin/.meta/example.h

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#pragma once
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#include <string>
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#include <string_view>
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namespace pig_latin {
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std::string translate(const std::string& phrase);
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} // namespace pig_latin

‎exercises/practice/pig-latin/.meta/tests.toml

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# This is an auto-generated file.
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#
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# Regenerating this file via `configlet sync` will:
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# - Recreate every `description` key/value pair
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# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
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# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
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# - Preserve any other key/value pair
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#
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# As user-added comments (using the # character) will be removed when this file
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# is regenerated, comments can be added via a `comment` key.
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[11567f84-e8c6-4918-aedb-435f0b73db57]
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description = "ay is added to words that start with vowels -> word beginning with a"
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[f623f581-bc59-4f45-9032-90c3ca9d2d90]
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description = "ay is added to words that start with vowels -> word beginning with e"
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[7dcb08b3-23a6-4e8a-b9aa-d4e859450d58]
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description = "ay is added to words that start with vowels -> word beginning with i"
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[0e5c3bff-266d-41c8-909f-364e4d16e09c]
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description = "ay is added to words that start with vowels -> word beginning with o"
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[614ba363-ca3c-4e96-ab09-c7320799723c]
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description = "ay is added to words that start with vowels -> word beginning with u"
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[bf2538c6-69eb-4fa7-a494-5a3fec911326]
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description = "ay is added to words that start with vowels -> word beginning with a vowel and followed by a qu"
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[e5be8a01-2d8a-45eb-abb4-3fcc9582a303]
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description = "first letter and ay are moved to the end of words that start with consonants -> word beginning with p"
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[d36d1e13-a7ed-464d-a282-8820cb2261ce]
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description = "first letter and ay are moved to the end of words that start with consonants -> word beginning with k"
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[d838b56f-0a89-4c90-b326-f16ff4e1dddc]
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description = "first letter and ay are moved to the end of words that start with consonants -> word beginning with x"
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[bce94a7a-a94e-4e2b-80f4-b2bb02e40f71]
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description = "first letter and ay are moved to the end of words that start with consonants -> word beginning with q without a following u"
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[c01e049a-e3e2-451c-bf8e-e2abb7e438b8]
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description = "some letter clusters are treated like a single consonant -> word beginning with ch"
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[9ba1669e-c43f-4b93-837a-cfc731fd1425]
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description = "some letter clusters are treated like a single consonant -> word beginning with qu"
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[92e82277-d5e4-43d7-8dd3-3a3b316c41f7]
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description = "some letter clusters are treated like a single consonant -> word beginning with qu and a preceding consonant"
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[79ae4248-3499-4d5b-af46-5cb05fa073ac]
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description = "some letter clusters are treated like a single consonant -> word beginning with th"
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[e0b3ae65-f508-4de3-8999-19c2f8e243e1]
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description = "some letter clusters are treated like a single consonant -> word beginning with thr"
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[20bc19f9-5a35-4341-9d69-1627d6ee6b43]
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description = "some letter clusters are treated like a single consonant -> word beginning with sch"
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[54b796cb-613d-4509-8c82-8fbf8fc0af9e]
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description = "some letter clusters are treated like a single vowel -> word beginning with yt"
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[8c37c5e1-872e-4630-ba6e-d20a959b67f6]
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description = "some letter clusters are treated like a single vowel -> word beginning with xr"
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[a4a36d33-96f3-422c-a233-d4021460ff00]
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description = "position of y in a word determines if it is a consonant or a vowel -> y is treated like a consonant at the beginning of a word"
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[adc90017-1a12-4100-b595-e346105042c7]
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description = "position of y in a word determines if it is a consonant or a vowel -> y is treated like a vowel at the end of a consonant cluster"
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[29b4ca3d-efe5-4a95-9a54-8467f2e5e59a]
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description = "position of y in a word determines if it is a consonant or a vowel -> y as second letter in two letter word"
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[44616581-5ce3-4a81-82d0-40c7ab13d2cf]
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description = "phrases are translated -> a whole phrase"

‎exercises/practice/pig-latin/CMakeLists.txt

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# Get the exercise name from the current directory
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get_filename_component(exercise ${CMAKE_CURRENT_SOURCE_DIR} NAME)
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# Basic CMake project
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cmake_minimum_required(VERSION 3.5.1)
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# Name the project after the exercise
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project(${exercise} CXX)
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# Get a source filename from the exercise name by replacing -'s with _'s
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string(REPLACE "-" "_" file ${exercise})
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# Implementation could be only a header
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if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${file}.cpp)
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set(exercise_cpp ${file}.cpp)
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else()
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set(exercise_cpp "")
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endif()
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# Use the common Catch library?
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if(EXERCISM_COMMON_CATCH)
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# For Exercism track development only
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add_executable(${exercise} ${file}_test.cpp ${exercise_cpp} ${file}.h $<TARGET_OBJECTS:catchlib>)
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elseif(EXERCISM_TEST_SUITE)
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# The Exercism test suite is being run, the Docker image already
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# includes a pre-built version of Catch.
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find_package(Catch2 REQUIRED)
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add_executable(${exercise} ${file}_test.cpp ${exercise_cpp} ${file}.h)
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target_link_libraries(${exercise} PRIVATE Catch2::Catch2WithMain)
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# When Catch is installed system wide we need to include a different
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# header, we need this define to use the correct one.
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target_compile_definitions(${exercise} PRIVATE EXERCISM_TEST_SUITE)
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else()
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# Build executable from sources and headers
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add_executable(${exercise} ${file}_test.cpp ${exercise_cpp} ${file}.h test/tests-main.cpp)
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endif()
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set_target_properties(${exercise} PROPERTIES
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CXX_STANDARD 17
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CXX_STANDARD_REQUIRED OFF
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CXX_EXTENSIONS OFF
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)
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set(CMAKE_BUILD_TYPE Debug)
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if("${CMAKE_CXX_COMPILER_ID}" MATCHES "(GNU|Clang)")
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set_target_properties(${exercise} PROPERTIES
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COMPILE_FLAGS "-Wall -Wextra -Wpedantic -Werror"
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)
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endif()
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# Configure to run all the tests?
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if(${EXERCISM_RUN_ALL_TESTS})
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target_compile_definitions(${exercise} PRIVATE EXERCISM_RUN_ALL_TESTS)
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endif()
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# Tell MSVC not to warn us about unchecked iterators in debug builds
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if(${MSVC})
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set_target_properties(${exercise} PROPERTIES
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COMPILE_DEFINITIONS_DEBUG _SCL_SECURE_NO_WARNINGS)
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endif()
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# Run the tests on every build
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add_custom_target(test_${exercise} ALL DEPENDS ${exercise} COMMAND ${exercise})

‎exercises/practice/pig-latin/pig_latin.cpp

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#include "pig_latin.h"
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namespace pig_latin {
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} // namespace pig_latin

‎exercises/practice/pig-latin/pig_latin.h

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#pragma once
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namespace pig_latin {
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} // namespace pig_latin

‎exercises/practice/pig-latin/pig_latin_test.cpp

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#include "pig_latin.h"
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#ifdef EXERCISM_TEST_SUITE
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#include <catch2/catch.hpp>
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#else
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#include "test/catch.hpp"
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#endif
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TEST_CASE("word beginning with a", "[11567f84-e8c6-4918-aedb-435f0b73db57]") {
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REQUIRE("appleay" == pig_latin::translate("apple"));
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}
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#if defined(EXERCISM_RUN_ALL_TESTS)
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TEST_CASE("word beginning with e", "[f623f581-bc59-4f45-9032-90c3ca9d2d90]") {
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REQUIRE("earay" == pig_latin::translate("ear"));
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}
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TEST_CASE("word beginning with i", "[7dcb08b3-23a6-4e8a-b9aa-d4e859450d58]") {
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REQUIRE("iglooay" == pig_latin::translate("igloo"));
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}
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TEST_CASE("word beginning with o", "[0e5c3bff-266d-41c8-909f-364e4d16e09c]") {
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REQUIRE("objectay" == pig_latin::translate("object"));
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}
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TEST_CASE("word beginning with u", "[614ba363-ca3c-4e96-ab09-c7320799723c]") {
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REQUIRE("underay" == pig_latin::translate("under"));
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}
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TEST_CASE("word beginning with a vowel and followed by a qu", "[bf2538c6-69eb-4fa7-a494-5a3fec911326]") {
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REQUIRE("equalay" == pig_latin::translate("equal"));
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}
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TEST_CASE("word beginning with p", "[e5be8a01-2d8a-45eb-abb4-3fcc9582a303]") {
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REQUIRE("igpay" == pig_latin::translate("pig"));
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}
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TEST_CASE("word beginning with k", "[d36d1e13-a7ed-464d-a282-8820cb2261ce]") {
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REQUIRE("oalakay" == pig_latin::translate("koala"));
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}
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TEST_CASE("word beginning with x", "[d838b56f-0a89-4c90-b326-f16ff4e1dddc]") {
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REQUIRE("enonxay" == pig_latin::translate("xenon"));
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}
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TEST_CASE("word beginning with q without a following u", "[bce94a7a-a94e-4e2b-80f4-b2bb02e40f71]") {
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REQUIRE("atqay" == pig_latin::translate("qat"));
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}
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TEST_CASE("word beginning with ch", "[c01e049a-e3e2-451c-bf8e-e2abb7e438b8]") {
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REQUIRE("airchay" == pig_latin::translate("chair"));
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}
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TEST_CASE("word beginning with qu", "[9ba1669e-c43f-4b93-837a-cfc731fd1425]") {
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REQUIRE("eenquay" == pig_latin::translate("queen"));
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}
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TEST_CASE("word beginning with qu and a preceding consonant", "[92e82277-d5e4-43d7-8dd3-3a3b316c41f7]") {
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REQUIRE("aresquay" == pig_latin::translate("square"));
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}
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TEST_CASE("word beginning with th", "[79ae4248-3499-4d5b-af46-5cb05fa073ac]") {
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REQUIRE("erapythay" == pig_latin::translate("therapy"));
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}
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TEST_CASE("word beginning with thr", "[e0b3ae65-f508-4de3-8999-19c2f8e243e1]") {
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REQUIRE("ushthray" == pig_latin::translate("thrush"));
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}
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TEST_CASE("word beginning with sch", "[20bc19f9-5a35-4341-9d69-1627d6ee6b43]") {
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REQUIRE("oolschay" == pig_latin::translate("school"));
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}
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TEST_CASE("word beginning with yt", "[54b796cb-613d-4509-8c82-8fbf8fc0af9e]") {
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REQUIRE("yttriaay" == pig_latin::translate("yttria"));
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}
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TEST_CASE("word beginning with xr", "[8c37c5e1-872e-4630-ba6e-d20a959b67f6]") {
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REQUIRE("xrayay" == pig_latin::translate("xray"));
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}
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TEST_CASE("y is treated like a consonant at the beginning of a word", "[a4a36d33-96f3-422c-a233-d4021460ff00]") {
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REQUIRE("ellowyay" == pig_latin::translate("yellow"));
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}
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TEST_CASE("y is treated like a vowel at the end of a consonant cluster", "[adc90017-1a12-4100-b595-e346105042c7]") {
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REQUIRE("ythmrhay" == pig_latin::translate("rhythm"));
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}
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TEST_CASE("y as second letter in two letter word", "[29b4ca3d-efe5-4a95-9a54-8467f2e5e59a]") {
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REQUIRE("ymay" == pig_latin::translate("my"));
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}
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TEST_CASE("a whole phrase", "[44616581-5ce3-4a81-82d0-40c7ab13d2cf]") {
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REQUIRE("ickquay astfay unray" == pig_latin::translate("quick fast run"));
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}
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#endif

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