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what is the difference between ?:, ?! and ?= in regex?
I searched for the meaning of these expressions but couldn't understand the exact difference between them.
This is what they say:
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Python Dictionary to URL Parameters
I am trying to convert a Python dictionary to a string for use as URL parameters. I am sure that there is a better, more Pythonic way of doing this. What is it?
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Loop through Map in Groovy?
I have a very simple task I am trying to do in Groovy but cannot seem to get it to work. I am just trying to loop through a map object in groovy and print out the key and value but this code does not work.
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How to check if an element is in an array
In Swift, how can I check if an element exists in an array? Xcode does not have any suggestions for contain , include , or has , and a quick search through the book turned up nothing. Any idea how to check for this? I know that there is a method find that returns the index number, but is there ...
MySQL: Invalid use of group function
I am using MySQL. Here is my schema:
2 Answers
2
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How to test if one java class extends another at runtime?
How to I test if a is a subclass of b ?
3 Answers
3
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git ignore all files of a certain type, except those in a specific subfolder
I have a directory structure like this:
1 Answer
1
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How to flatten only some dimensions of a numpy array
Is there a quick way to "sub-flatten" or flatten only some of the first dimensions in a numpy array?
4 Answers
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Is there a more elegant way of adding an item to a Dictionary safely?
I need to add key/object pairs to a dictionary, but I of course need to first check if the key already exists otherwise I get a " key already exists in dictionary " error. The code below solves this but is clunky.
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How to get min/max of two integers in Postgres/SQL?
How do I find the maximum (or minimum) of two integers in Postgres/SQL? One of the integers is not a column value.
2 Answer...