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UIGestureRecognizer on UIImageView
...;
UIPinchGestureRecognizer *pgr = [[UIPinchGestureRecognizer alloc]
initWithTarget:self action:@selector(handlePinch:)];
pgr.delegate = self;
[imageView addGestureRecognizer:pgr];
[pgr release];
:
:
- (void)handlePinch:(UIPinchGestureRecognizer *)pinchGestureRecognizer
{
//handle pinch...
}
...
Scala: Nil vs List()
...))
true
scala> println (Nil equals List())
true
scala> System.identityHashCode(Nil)
374527572
scala> System.identityHashCode(List())
374527572
Nil is more idiomatic and can be preferred in most cases.
Questions?
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What is the relative performance difference of if/else versus switch statement in Java?
... my web application's performances, I am wondering which of "if/else" or switch statement is better regarding performance?
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Determine if string is in list in JavaScript
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The only problem with Array.prototype.indexOf is that it will not work on IE, sadly even IE8 lacks this method.
– Christian C. Salvadó
Mar 12 '10 at 2:24
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How do I remove all specific characters at the end of a string in PHP?
How do I remove the last character only if it's a period?
9 Answers
9
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Right way to reverse pandas.DataFrame?
...an error because reversed first calls data.__len__() which returns 6. Then it tries to call data[j - 1] for j in range(6, 0, -1), and the first call would be data[5]; but in pandas dataframe data[5] means column 5, and there is no column 5 so it will throw an exception. ( see docs )
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In Python script, how do I set PYTHONPATH?
I know how to set it in my /etc/profile and in my environment variables.
6 Answers
6
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Intel HAXM installation error - This computer does not support Intel Virtualization Technology (VT-x
I have an issue with my HAXM installation. Here is the thing. I got this error every single time I tried to install HAXM for my computer:
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How do I enable EF migrations for multiple contexts to separate databases?
How do I enable Entity Framework 5 (version 5.0.0) migrations for multiple DB contexts in the same project, where each context corresponds to its own database? When I run Enable-Migrations in the PM console (Visual Studio 2012), there's an error because of there being multiple contexts:
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Encrypt and decrypt a string in C#?
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EDIT 2013-Oct: Although I've edited this answer over time to address shortcomings, please see jbtule's answer for a more robust, informed solution.
https://stackoverflow.com/a/10366194/188474
Original Answer:
Here's a workin...