Tutorial by Topics: per

Python operators have a set order of precedence, which determines what operators are evaluated first in a potentially ambiguous expression. For instance, in the expression 3 * 2 + 7, first 3 is multiplied by 2, and then the result is added to 7, yielding 13. The expression is not evaluated the other...

This section provides an overview of what automapper is, and why a developer might want to use it. It should also mention any large subjects within automapper, and link out to the related topics. Since the Documentation for automapper is new, you may need to create initial versions of those rela...

Rx.Observable.prototype.map(selector, [thisArg]) Rx.Observable.prototype.select(selector, [thisArg]) Parameter, TypeDetailsselector, Function or ObjectTransform function to apply to each source element or an element to yield. If selector is a function, it is called with the following inform...

This topic describes a number of "pitfalls" (i.e. mistakes that novice java programmers make) that relate to Java application performance. This topic describes some "micro" Java coding practices that are inefficient. In most cases, the inefficiencies are relatively small, ...

There are some means to chain commands together. Simple ones like just a ; or more complex ones like logical chains which run depending on some conditions. The third one is piping commands, which effectively hands over the output data to the next command in the chain.

Operators are evaluated in the following order: Mathematical operators Bitwise operators Concatenation operators Comparison operators Logical operators Operators with matching precedence are evaluated from left to right. The default order can be overridden by using parentheses ( and ) t...

{ $set: { <field1>:<value1>, <field2>:<value2>, ... } } parametersMeaningfieldNameField will be updated :{name: 'Tom'}targetVauleValue will be assigned to the field :{name: 'Tom'} Reference for $set operator: $set on offical website

When attempting to improve the performance of a Python script, first and foremost you should be able to find the bottleneck of your script and note that no optimization can compensate for a poor choice in data structures or a flaw in your algorithm design. Identifying performance bottlenecks can ...

Tk is one of the most commonly used GUI toolkits for Perl. Other common toolkits are GTK+2 & 3, WxWidgets, and Win32 widgets. Less commonly used are Qt4, XUL, Prima, and FLTK. Tk, GTK+3, Wx, Win32, Prima, FLTK, and XUL are actively updated. Qt4 and GTK+2 are no longer developed actively, but ...