Tutorial by Topics: i

NSLog(@"text to log"); // Basic text log NSLog(@"data: %f - %.2f", myFloat, anotherFloat); // Logging text including float numbers. NSLog(@"data: %i", myInteger); // Logging text including integer number. NSLog(@"data: %@", myStringOrObject); // Logging...

A FrameLayout with a rounded corner background and shadow. CardView uses elevation property on Lollipop for shadows and falls back to a custom emulated shadow implementation on older platforms. Due to expensive nature of rounded corner clipping, on platforms before Lollipop, CardView does not clip...

\C (any one character except newline) 'all literal except single quotes'; 'this: '\'' is a single quote' $'only \\ and \' are special; \n = newline etc.' "$variable and other text; \"\\\$\` are special"

Bitwise operations alter binary strings at the bit level. These operations are incredibly basic and are directly supported by the processor. These few operations are necessary in working with device drivers, low-level graphics, cryptography, and network communications. This section provides useful k...

[[ -OP $filename ]] [[ $file1 -OP $file2 ]] [[ -z $string ]] [[ -n $string ]] [[ "$string1" == "$string2" ]] [[ "$string1" == $pattern ]] The [[ … ]] syntax surrounds bash built-in conditional expressions. Note that spaces are required on either side of th...

A slice is a data structure that encapsulates an array so that the programmer can add as many elements as needed without having to worry about memory management. Slices can be cut into sub-slices very efficiently, since the resulting slices all point to the same internal array. Go programmers often ...

SomeClass sc = new SomeClass { Property1 = value1, Property2 = value2, ... }; SomeClass sc = new SomeClass(param1, param2, ...) { Property1 = value1, Property2 = value2, ... } The constructor parentheses can only be omitted if the type being instantiated has a default (parameterless) const...

Recursion is mostly available in Perl-compatible flavors, such as: Perl PCRE Oniguruma Boost

Some times you need to create extended text documentation from you xml comments. Unfortunatly there is no standard way for it. But there are some separate projects that you can use for this case: Sandcastle Docu NDoc DocFX

shift shifts the positional parameters to the left so that $2 becomes $1, $3 becomes $2 and so forth. "$@" is an array of all the positional parameters passed to the script/function. "$*" is an string composed of all the positional parameters passed to the script/function. ...

WITH QueryName [(ColumnName, ...)] AS (   SELECT ... ) SELECT ... FROM QueryName ...; WITH RECURSIVE QueryName [(ColumnName, ...)] AS (   SELECT ...   UNION [ALL]   SELECT ... FROM QueryName ... ) SELECT ... FROM QueryName ...; Official documentation: WITH clause A Common ...

transition: [transition-property] [transition-duration] [transition-timing-function] [transition-delay]; ParameterDetailstransition-propertyThe specific CSS property whose value change needs to be transitioned (or) all, if all the transitionable properties need to be transitioned.transition-...

#define [symbol] // Defines a compiler symbol. #undef [symbol] // Undefines a compiler symbol. #warning [warning message] // Generates a compiler warning. Useful with #if. #error [error message] // Generates a compiler error. Useful with #if. #line [line number] (file name) // Overrides the co...

Introduction to Algorithms Algorithms are ubiquitous in Computer Science and Software Engineering. Selection of appropriate algorithms and data structures improves our program efficiency in cost and time. What is an algorithm? Informally, an algorithm is a procedure to accomplish a specific ta...

This topic is meant to show a general way to call the Twitch API without OAuth. You can call any APIs found in the Twitch REST API documentation using this pattern. You would simply change the URL to the correct endpoint. A Client-ID is required for all calls to the Twitch API. In these examples,...

The WebCrypto APIs are usually only available on "secure" origins, meaning that the document must have been loaded over HTTPS or from the local machine (from localhost, file:, or a browser extension). These APIs are specified by the W3C Web Cryptography API Candidate Recommendation. ...

The dynamic keyword declares a variable whose type is not known at compile time. A dynamic variable can contain any value, and the type of the value can change during runtime. As noted in the book "Metaprogramming in .NET", C# does not have a backing type for the dynamic keyword: The...