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Inverse dictionary lookup in Python
Is there any straightforward way of finding a key by knowing the value within a dictionary?
13 Answers
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Can I change multiplier property for NSLayoutConstraint?
...ine should always be the first line. because you have to deactivate one before activating the other one. or they will conflict.
zoomedConstraint.active = YES;
[self.view layoutIfNeeded]; // or using [UIView animate ...]
Swift 5.0 version
var standardConstraint: NSLayoutConstraint!
var zoomedConst...
What's the difference between & and && in MATLAB?
What is the difference between the & and && logical operators in MATLAB?
7 Answers
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How do I strip all spaces out of a string in PHP? [duplicate]
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Do you just mean spaces or all whitespace?
For just spaces, use str_replace:
$string = str_replace(' ', '', $string);
For all whitespace (including tabs and line ends), use preg_replace:
$string = preg_replace('/\s+/', '', $string);
(From her...
How to make node.js require absolute? (instead of relative)
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It requires the file as if it were required from the main js file, so it works pretty well as long as your main js file is at the root of your project... and that's something I appreciate.
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Could not reserve enough space for object heap
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Run the JVM with -XX:MaxHeapSize=512m (or any big number as you need) (or -Xmx512m for short)
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Rails 4: how to use $(document).ready() with turbo-links
I ran into an issue in my Rails 4 app while trying to organize JS files "the rails way". They were previously scattered across different views. I organized them into separate files and compile them with the assets pipeline. However, I just learned that jQuery's "ready" event doesn't fire on subseque...
When to use an assertion and when to use an exception
Most of the time I will use an exception to check for a condition in my code, I wonder when it is an appropriate time to use an assertion?
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Convert hex string to int in Python
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>>> print int("10", 0)
10
(You must specify 0 as the base in order to invoke this prefix-guessing behavior; omitting the second parameter means to assume base-10.)
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What does href expression do?
... from time to time. However, I don't understand what this is trying to do or the technique. Can someone elaborate please?
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