Tutorial by Topics: ion

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 ...

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...

Mirror(reflecting: instance) // Initializes a mirror with the subject to reflect mirror.displayStyle // Display style used for Xcode playgrounds mirror.description // Textual representation of this instance, see CustomStringConvertible mirror.subjectType // Returns the type of the subject being...

funcname = function(paramA, paramB, ...) body; return exprlist end -- a simple function function funcname(paramA, paramB, ...) body; return exprlist end -- shorthand for above local funcname = function(paramA, paramB, ...) body; return exprlist end -- a lambda local funcname; funcname = functio...

Help text can be located before or after the function line, as long as there is not code between the function line and the start of the help text. Capitalization of the function name only bolds the name, and is not required. If a line is prepended with See also, any names on the line that mat...

(function name) ; retrieves the function object of that name #'name ; syntactic sugar for (function name) (symbol-function symbol) ; returns the function bound to symbol (funcall function args...) ; call function with args (apply function arglist) ; call function with arguments given in a list...

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"> ...

These language extensions are typically available when using the Glasgow Haskell Compiler (GHC) as they are not part of the approved Haskell 2010 language Report. To use these extensions, one must either inform the compiler using a flag or place a LANGUAGE programa before the module keyword in a ...

fun Name(Params) = ... fun Name(Params) {...} fun Name(Params): Type {...} fun <Type Argument> Name(Params): Type {...} inline fun Name(Params): Type {...} { ArgName: ArgType -> ... } { ArgName -> ... } { ArgNames -> ... } { (ArgName: ArgType): Type -> ... } Paramet...

Constructor functions are actually just regular functions, there's nothing special about them. It's only the new keyword which causes the special behavior shown in the examples above. Constructor functions can still be called like a regular function if desired, in which case you would need to bind...

Imagine you had a class with some pretty important variables and they were set (by other programmers from their code) to unacceptable values.Their code brought errors in your code. As a solution, In OOP, you allow the state of an object (stored in its variables) to be modified only through methods. ...

ParameterDetailsrequiredThe field is requiredsometimesRun validation checks against a field only if that field is present in the input arrayemailThe input is a valid emailmax:valueThe input value should be below the maximum valueunique:db_table_nameThe input value should be unique in the provided ...