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What's “requestCode” used for on PendingIntent?
Background:
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Regular expression to allow spaces between words
I want a regular expression that prevents symbols and only allows letters and numbers. The regex below works great, but it doesn't allow for spaces between words.
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Accessing dict_keys element by index in Python3
I'm trying to access a dict_key's element by its index:
6 Answers
6
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PHP code to remove everything but numbers
I'm trying to remove everything from a string but just numbers (0-9).
4 Answers
4
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How to resize an image to fit in the browser window?
This seems trivial but after all the research and coding I can't get it to work. Conditions are:
14 Answers
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Best way to serialize an NSData into a hexadeximal string
I am looking for a nice-cocoa way to serialize an NSData object into a hexadecimal string. The idea is to serialize the deviceToken used for notification before sending it to my server.
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is it possible to select EXISTS directly as a bit?
I was wondering if it's possible to do something like this (which doesn't work):
9 Answers
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Generate random password string with requirements in javascript
I want to generate a random string that has to have 5 letters from a-z and 3 numbers.
18 Answers
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LINQ with groupby and count
This is pretty simple but I'm at a loss:
Given this type of data set:
3 Answers
3
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Confusion between factor levels and factor labels
There seems to be a difference between levels and labels of a factor in R.
Up to now, I always thought that levels were the 'real' name of factor levels, and labels were the names used for output (such as tables and plots). Obviously, this is not the case, as the following example shows:
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