Tutorial by Examples: an

xcrun simctl install booted *.app

Debugging starts with understanding the code you are trying to debug. Bad code: int main() { int value; std::vector<int> vectorToSort; vectorToSort.push_back(42); vectorToSort.push_back(13); for (int i = 52; i; i = i - 1) { vectorToSort.push_back(i *2); } ...

Static analysis is the technique in which on checks the code for patterns linked to known bugs. Using this technique is less time consuming than a code review, though, its checks are only limited to those programmed in the tool. Checks can include the incorrect semi-colon behind the if-statement (i...

This solution is more involved, leveraging custom TypeScript decorators which inject match, history and/or location data into your React.Component class, which gets you full type safety without needing any type guards, as the previous example required. // Routed.ts - defines decorators import { Ro...

PageTS Settings: ## Default Image cropping ## TCEFORM.sys_file_reference.crop.config.cropVariants { default { title = Desktop selectedRatio = NaN allowedAspectRatios { NaN { title = Free value = 0.0 } ...

Add repository repositories { maven { url "https://github.com/QuickBlox/quickblox-android-sdk-releases/raw/master/" } } Add in Project Gradle for Chat Functionality dependencies { compile("com.quickblox:quickblox-android-sdk-chat:2.6.1&...

A for loop iterate through items in an enumeration program EnumLoop; uses TypInfo; type TWeekdays = (Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday); var wd : TWeekdays; begin for wd in TWeekdays do WriteLn(GetEnumName(TypeInfo(TWeekdays), Ord(wd))); ...

Consider the array declared as real x(10) Then we have three aspects of interest: The whole array x; Array elements, like x(1); Array sections, like x(2:6). Whole arrays In most cases the whole array x refers to all of the elements of the array as a single entity. It may appear in exec...

Create new script section. I call that sa(Script Anonymuos) that meens for me generate JavaScript section with anonymuous function call inside. <script type="text/javascript"> $(function () { $END$ }); </script> If in your project still use old jQuery you c...

Firstly it's important to note that when a new socket is created it is assigned a unique Id which is retrieved by calling socket.id. This id can then be stored within a user object and we can assign an identifier such as a username which has been used in this example to retrieve user objects. /** ...

The following example sets a promise to be consumed by another thread: { auto promise = std::promise<std::string>(); auto producer = std::thread([&] { promise.set_value("Hello World"); }); auto fut...

std::packaged_task bundles a function and the associated promise for its return type: template<typename F> auto async_deferred(F&& func) -> std::future<decltype(func())> { auto task = std::packaged_task<decltype(func())()>(std::forward<F>(func)); aut...

In general, there are two types of Bash scripts: System tools which operate from the current working directory Project tools which modify files relative to their own place in the files system For the second type of scripts, it is useful to change to the directory where the script is stored. T...

If constraints for std::promise and std::future are not met an exception of type std::future_error is thrown. The error code member in the exception is of type std::future_errc and values are as below, along with some test cases: enum class future_errc { broken_promise = /* the t...

How can I print hello world 5 times? 5.times{ println "hello world" }

Getting a GA Account: If you don’t have an Analytics account, create one. If you do have an Analytics account, sign in. Both options are available at google.com/analytics Setting up a property in your Analytics account: A property represents your website or app where the data gets aggrega...

Table/Column Names Two common ways of formatting table/column names are CamelCase and snake_case: SELECT FirstName, LastName FROM Employees WHERE Salary > 500; SELECT first_name, last_name FROM employees WHERE salary > 500; Names should describe what is stored in their object. Th...

if len(sys.argv) != 4: # The script name needs to be accounted for as well. raise RuntimeError("expected 3 command line arguments") f = open(sys.argv[1], 'rb') # Use first command line argument. start_line = int(sys.argv[2]) # All arguments come as strings, so need to ...

# Error messages should not go to standard output, if possible. print('ERROR: We have no cheese at all.', file=sys.stderr) try: f = open('nonexistent-file.xyz', 'rb') except OSError as e: print(e, file=sys.stderr)

def main(): if len(sys.argv) != 4 or '--help' in sys.argv[1:]: print('usage: my_program <arg1> <arg2> <arg3>', file=sys.stderr) sys.exit(1) # use an exit code to signal the program was unsuccessful process_data()