Tutorial by Topics: s

Terminology The Caret (^) character is also referred to by the following terms: hat control uparrow chevron circumflex accent Usage It has two uses in regular expressions: To denote the start of the line If used immediately after a square bracket ([^) it acts to negate the set of a...

void (*signal(int sig, void (*func)(int)))(int); ParameterDetailssigThe signal to set the signal handler to, one of SIGABRT, SIGFPE, SIGILL, SIGTERM, SIGINT, SIGSEGV or some implementation defined valuefuncThe signal handler, which is either of the following: SIG_DFL, for the default handler...

Variable arguments are used by functions in the printf family (printf, fprintf, etc) and others to allow a function to be called with a different number of arguments each time, hence the name varargs. To implement functions using the variable arguments feature, use #include <stdarg.h>. To ca...

The CASE expression is used to implement if-then logic. CASE input_expression  WHEN compare1 THEN result1 [WHEN compare2 THEN result2]... [ELSE resultX] END CASE  WHEN condition1 THEN result1 [WHEN condition2 THEN result2]... [ELSE resultX] END The simple CASE expression return...

ParameterDetailsstring $toThe recipient email addressstring $subjectThe subject linestring $messageThe body of the emailstring $additional_headersOptional: headers to add to the emailstring $additional_parametersOptional: arguments to pass to the configured mail send application in the command line...

The init() is a special method in classes which is used to declare an initializer for the class. More information can be found here: Initializers

Classes, functions, and (since C++14) variables can be templated. A template is a piece of code with some free parameters that will become a concrete class, function, or variable when all parameters are specified. Parameters can be types, values, or themselves templates. A well-known template is std...

A 9-patch image file is a specially formatted file so that Android knows which areas/portions of the image can or cannot be scaled. It breaks your image into a 3x3 grid. The corners remain unscaled, the sides are scaled in one direction and the center is scaled in both dimensions. A Nine Patch ...

VBScript (VBS) is a Visual Basic-flavored scripting language for Internet Explorer and Windows. It can be used on the web in principle, like JavaScript, but does not have much support, so it's usually confined to standalone or server-side scripts in business environments that use Windows exclusive...

VersionRelease Date1.0.02016-04-14

INSERT INTO table_name (column1,column2,column3,...) VALUES (value1,value2,value3,...); INSERT INTO table_name (column1, column2...) SELECT value1, value2... from other_table

ParameterDetailsbillingAgreementAttributesConfiguration object to create the billing agreementbillingPlanBilling plan ID from the query stringbillingPlanAttribsConfiguration object to create the billing planbillingPlanUpdateAttributesConfiguration object for changing a billing plan to an active sta...

Similar to other programming, markup, and markdown languages, comments in HTML provide other developers with development specific information without affecting the user interface. Unlike other languages however, HTML comments can be used to specify HTML elements for Internet Explorer only. This topi...

Define a function with the function keyword: function f { } Define a function with (): f(){ } Define a function with both the function keyword and (): function f(){ }

Proc.new(block) lambda { |args| code } ->(arg1, arg2) { code } object.to_proc { |single_arg| code } do |arg, (key, value)| code end Be careful about operator precedence when you have a line with multiple methods chained, like: str = "abcdefg" puts str.gsub(/./) do |mat...

Conditional expressions, involving keywords such as if, else if, and else, provide Swift programs with the ability to perform different actions depending on a Boolean condition: True or False. This section covers the use of Swift conditionals, Boolean logic, and ternary statements. For more in...

Scala has first-class functions. Difference between functions and methods: A function is not a method in Scala: functions are a value, and may be assigned as such. Methods (created using def), on the other hand, must belong to a class, trait or object. Functions are compiled to a class exte...