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Fastest way to flatten / un-flatten nested JSON objects
... var regex = /\.?([^.\[\]]+)|\[(\d+)\]/g,
resultholder = {};
for (var p in data) {
var cur = resultholder,
prop = "",
m;
while (m = regex.exec(p)) {
cur = cur[prop] || (cur[prop] = (m[2] ? [] : {}));
prop = m[2] || m[1];
...
Remove the legend on a matplotlib figure
...nd().remove()
or
legend = ax.legend(...)
...
legend.remove()
See here for the commit where this was introduced.
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Combine --user with --prefix error with setup.py install
...ption --user . (The option is currently undocumented , however it exists for Python 2.6+; you can see the help by running python setup.py install --help .)
...
iOS 7 style Blur view
...omponents underneath it, but you could just as easily use a CIGaussianBlur for the same. GPUImage might be a hair faster though.
That component relies on you being able to capture the view behind the one you're presenting, though, and may have trouble with views that animate behind this content. Th...
Max size of an iOS application
... is the maximum size your iOS app can be.
As of January 26, 2017
App Size for iOS (& tvOS) only
Your app’s total uncompressed size must be less than 4GB. Each Mach-O executable file (for example, app_name.app/app_name) must not exceed these limits:
For apps whose MinimumOSVersion is less tha...
Best way to show a loading/progress indicator?
What is the best way to show a loading spinner while the app is waiting for a response from the server?
5 Answers
...
How do I find numeric columns in Pandas?
...s as possible. This is due to pandas dynamism. The API changes frequently. For undocumented methods it's just plain reckless, no matter how useful it is.
– mik
Aug 21 '19 at 12:42
...
How do I test for an empty JavaScript object?
... array (the return value of keys).
Pre-ECMA 5:
function isEmpty(obj) {
for(var prop in obj) {
if(obj.hasOwnProperty(prop)) {
return false;
}
}
return JSON.stringify(obj) === JSON.stringify({});
}
jQuery:
jQuery.isEmptyObject({}); // true
lodash:
_.isEmpty({}); // true
...
Why Would I Ever Need to Use C# Nested Classes [duplicate]
...count() { ... }
}
By nesting the classes like this, I make it impossible for third parties to create their own subclasses. I have complete control over all the code that runs in any bankaccount object. And all my subclasses can share implementation details via the base class.
...
How to save a PNG image server-side, from a base64 data string
...eg_replace('#^data:image/\w+;base64,#i', '', $data));
An efficient method for extracting, decoding, and checking for errors is:
if (preg_match('/^data:image\/(\w+);base64,/', $data, $type)) {
$data = substr($data, strpos($data, ',') + 1);
$type = strtolower($type[1]); // jpg, png, gif
...