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How can I check if a key exists in a dictionary? [duplicate]
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if key in array:
# do something
Associative arrays are called dictionaries in Python and you can learn more about them in the stdtypes documentation.
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What would cause an algorithm to have O(log log n) complexity?
... n) terms can show up in a variety of different places, but there are typically two main routes that will arrive at this runtime.
Shrinking by a Square Root
As mentioned in the answer to the linked question, a common way for an algorithm to have time complexity O(log n) is for that algorithm to work...
npm not working after clearing cache
... not work for me on Windows 10 (no errors, just did nothing). I had to manually delete all the folders within %appdata%\npm-cache
– plasmid87
Dec 7 '17 at 16:18
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Shared-memory objects in multiprocessing
... some other parameters). func with different parameters can be run in parallel. For example:
4 Answers
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NSString with \n or line break
...instance of NSString named myString read in from my .plist file, I had to call...
myString = [myString stringByReplacingOccurrencesOfString:@"\\n" withString:@"\n"];
... before assigning it to my UILabel instance...
myLabel.text = myString;
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How can I select the first day of a month in SQL?
...dOfMonth will give you the last day of the month.
– hallizh
Nov 3 '15 at 13:47
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How can I determ...
Setting Corner Radius on UIImageView not working
... (view.layer.shouldRasterize = YES), every frame will require a re-mask of all the pixels.
– jjxtra
Aug 12 '13 at 13:41
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sass --watch with automatic minify?
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All of the output styles are listed here (nested, expanded, compact, and compressed)
– allicarn
Aug 20 '13 at 14:59
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How to enter quotes in a Java string?
...g ROM = "Java Programming";
ROM = "\"" + ROM + "\"";
Of course, this actually replaces the original ROM, since Java Strings are immutable.
If you are wanting to do something like turn the variable name into a String, you can't do that in Java, AFAIK.
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Is there a Null OutputStream in Java?
I need to specify an OutputStream for an API I'm using, but I don't actually have a need for the output. Does Java have an OutputStream equivalent to > /dev/null ?
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