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R comes with classes for dates, date-times and time differences; see ?Dates, ?DateTimeClasses, ?difftime and follow the "See Also" section of those docs for further documentation. Related Docs: Dates and Date-Time Classes. Classes POSIXct A date-time class, POSIXct stores ti...
A switch statement allows a variable to be tested for equality against a list of values. Each value is called a case, and the variable being switched on is checked for each switch case. It enables you to write a script that can choose from a series of options, but without requiring you to write a lo...
Unlike C/C++, Java is completely endian-neutral with respect to the underlying machine hardware. You do not get big or little endian behavior by default; you have to explicitly specify which behavior you want. The byte type is signed, with the range -128 to +127. To convert a byte value ...
<element data-custom-name="somevalue"> ValueDescriptionsomevalueSpecifies the value of the attribute (as a string)
_ // wildcard pattern, matches anything¹ ident // binding pattern, matches anything and binds it to ident¹ ident @ pat // same as above, but allow to further match what is binded ref ident // binding pattern, matches anything and binds it to a reference ident¹ ref mut ident // binding pattern,...
Summary A delegate type is a type representing a particular method signature. An instance of this type refers to a particular method with a matching signature. Method parameters may have delegate types, and so this one method to be passed a reference to another method, which may then be invoked...
structure: /* code */ endstructure; When mixing the alternative structure for switch with HTML, it is important to not have any whitespace between the initial switch($condition): and first case $value:. Doing this is attempting to echo something (whitespace) before a case. All control stru...
django-admin commandDetailsmakemigrations <my_app>Generate migrations for my_appmakemigrationsGenerate migrations for all appsmakemigrations --mergeResolve migration conflicts for all appsmakemigrations --merge <my_app>Resolve migration conflicts for my_appmakemigrations --name <migr...
ParameterDetailsos.F_OKValue to pass as the mode parameter of access() to test the existence of path.os.R_OKValue to include in the mode parameter of access() to test the readability of path.os.W_OKValue to include in the mode parameter of access() to test the writability of path.os.X_OKValue to in...
Meta tags in HTML documents provide useful information about the document including a description, keywords, author, dates of modifications and around 90 other fields. This topic covers the usage and purpose of these tags. <meta name="metadata name" content="value"> ...
# Only replace email addresses <[email protected]> <[email protected]> # Replace name by email address Contributor <[email protected]> # Merge multiple aliases under one name and email # Note this will not associate 'Other <[email protected]>'. Contributor <pr...
From Microsoft Technet: With batch files, which are also called batch programs or scripts, you can simplify routine or repetitive tasks. A batch file is an unformatted text file that contains one or more commands and has a .bat or .cmd file name extension. When you type the filename at the comm...

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