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How to remove a key from a Python dictionary?
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To delete a key regardless of whether it is in the dictionary, use the two-argument form of dict.pop():
my_dict.pop('key', None)
This will return my_dict[key] if key exists in the dictionary, and None otherwise. If the second parameter is not specified (ie. my...
Is a `=default` move constructor equivalent to a member-wise move constructor?
...; operator=(Example&& mE) = default;
}
This version will permits you to skip the body definition.
However, you have to follow some rules when you declare explicitly-defaulted-functions :
8.4.2 Explicitly-defaulted functions [dcl.fct.def.default]
A function definition of the form:
at...
Duplicate and rename Xcode project & associated folders [closed]
...cate an entire Xcode project, rename the project and the associated files without Xcode going mental, and without having to manually re-import all files to the project.
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What is the difference between a directory and a folder?
...From a programmer point of view, is there a difference, and if so, what is it? Does it depend on the OS, or is there a broad, general consensus? This at least suggests that there is a difference.
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Why Large Object Heap and why do we care?
...ect heap. But I still fail to understand what is the significance (or benefit) of having Large object heap?
5 Answers
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How do I correctly clean up a Python object?
__del__(self) above fails with an AttributeError exception. I understand Python doesn't guarantee the existence of "global variables" (member data in this context?) when __del__() is invoked. If that is the case and this is the reason for the exception, how do I make sure the object destructs...
Formula to determine brightness of RGB color
I'm looking for some kind of formula or algorithm to determine the brightness of a color given the RGB values. I know it can't be as simple as adding the RGB values together and having higher sums be brighter, but I'm kind of at a loss as to where to start.
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What is the difference between Java RMI and RPC?
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RPC is C based, and as such it has structured programming semantics, on the other side, RMI is a Java based technology and it's object oriented.
With RPC you can just call remote functions exported into a server, in RMI you can have references to remot...
read file from assets
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Here is what I do in an activity for buffered reading extend/modify to match your needs
BufferedReader reader = null;
try {
reader = new BufferedReader(
new InputStreamReader(getAssets().open("filename.txt")));
// do reading, usually lo...
Format date in a specific timezone
...HH:mm')
The older .zone() as a setter was deprecated in Moment.js 2.9.0. It accepted a string containing a timezone identifier (e.g., "-0400" or "-04:00" for -4 hours) or a number representing minutes behind UTC (e.g., 240 for New York during DST).
// always "2013-05-23 00:55"
moment(136926693431...