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D Programming Language in the real world? [closed]
...er projects that for whatever reason can afford to ditch the C++ legacy in order to gain a programming language that's much more enjoyable to use, and perhaps more productive too.
But until there's a huge number of grass-roots users there won't be much in the way of big corporate users I suspect.
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JavaScript isset() equivalent
In PHP you can do if(isset($array['foo'])) { ... } . In JavaScript you often use if(array.foo) { ... } to do the same, but this is not exactly the same statement. The condition will also evaluate to false if array.foo does exists but is false or 0 (and probably other values as well).
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json_encode() escaping forward slashes
...ur enemy)
json_encode($str, JSON_UNESCAPED_SLASHES);
If you don't have PHP 5.4 at hand, pick one of the many existing functions and modify them to your needs, e.g. http://snippets.dzone.com/posts/show/7487 (archived copy).
Example Demo
<?php
/*
* Escaping the reverse-solidus character ("/"...
What is the difference between SAX and DOM?
...and "event-based" refers to the parsing method.
Maybe a small recap is in order:
The document object model (DOM) is an abstract data model that describes a hierarchical, tree-based document structure; a document tree consists of nodes, namely element, attribute and text nodes (and some others). N...
If Python is interpreted, what are .pyc files?
... during compilation (and therefore don't perform automatic compilation) in order to check errors more thoroughly and perform more optimizations. It's a continuum of gray scales, not a black or white situation, and it would be utterly arbitrary to put a threshold at some given level and say that onl...
为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
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How do I strip all spaces out of a string in PHP? [duplicate]
How can I strip / remove all spaces of a string in PHP?
4 Answers
4
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What is the difference between self::$bar and static::$bar in PHP?
...atic, you're invoking a feature called late static bindings (introduced in PHP 5.3).
In the above scenario, using self will result in Foo::$bar(1234).
And using static will result in Bar::$bar (4321) because with static, the interpreter takes takes into account the redeclaration within the Bar clas...
Get value of dynamically chosen class constant in PHP
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$id = constant("ThingIDs::$thing");
http://php.net/manual/en/function.constant.php
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