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Java FileOutputStream Create File if not exists
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It will throw a FileNotFoundException if the file doesn't exist and cannot be created (doc), but it will create it if it can. To be sure you probably should first test that the file exists before you create the FileOutputStream (and create with createNewFile() if it doesn't):
File yourFi...
How do I get a class instance of generic type T?
... public void bar() {
// you can access the typeParameterClass here and do whatever you like
}
}
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Left align two graph edges (ggplot)
I'm using ggplot and have two graphs that I want to display on top of each other. I used grid.arrange from gridExtra to stack them. The problem is I want the left edges of the graphs to align as well as the right edges regardless of axis labels. (the problem arises because the labels of one gra...
Uninstall all installed gems, in OSX?
There are instances where I would like to revert and uninstall all previous gem installations.
13 Answers
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How to create a custom string representation for a class object?
...pace_C0wb0y: You could add a string like _representation to the class body and return self._representation in the __repr__() method of the metaclass.
– Sven Marnach
Feb 8 '11 at 12:50
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What does “Splats” mean in the CoffeeScript tutorial?
... arguments. Splatted arguments can come either before, after, or between standard arguments:
(first, rest...) ->
(rest..., last) ->
(first, rest..., last) ->
In the first two cases, if the function receives 0-1 arguments, rest will be an empty array. In the last case, the function needs ...
How to namespace Twitter Bootstrap so styles don't conflict
...the less mixins. I'm not experienced with this yet so I don't quite understand how to do this. Here's an example of the HTML that I'm trying to style:
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php static function
...() is actually an instance method which you are calling as a static method and you get away with it because sayHi() never refers to $this.
Static functions are associated with the class, not an instance of the class. As such, $this is not available from a static context ($this isn't pointing to any...
How to set the style -webkit-transform dynamically using JavaScript?
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The JavaScript style names are WebkitTransformOrigin and WebkitTransform
element.style.webkitTransform = "rotate(-2deg)";
Check the DOM extension reference for WebKit here.
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Trim string in JavaScript?
...tring.prototype.trim) {
(function() {
// Make sure we trim BOM and NBSP
var rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;
String.prototype.trim = function() {
return this.replace(rtrim, '');
};
})();
}
That said, if using jQuery, $.trim(str) is...