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How to modify a text file?

...rating system thing, not a Python thing. It is the same in all languages. What I usually do is read from the file, make the modifications and write it out to a new file called myfile.txt.tmp or something like that. This is better than reading the whole file into memory because the file may be too l...
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Where is Python's sys.path initialized from?

...set can get really complicated. The following guide is a watered-down, somewhat-incomplete, somewhat-wrong, but hopefully-useful guide for the rank-and-file python programmer of what happens when python figures out what to use as the initial values of sys.path, sys.executable, sys.exec_prefix, and s...
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mongo group query how to keep fields

...ightalchemist It is not possible. It's kind of a trick to let 'group' know what to choose. – TechWisdom Mar 24 '18 at 23:21 4 ...
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Why is my xlabel cut off in my matplotlib plot?

...d need to make an extra call to make room for an essential part of a plot. What's the reasoning behind this? – a different ben Apr 9 '12 at 8:09 4 ...
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glVertexAttribPointer clarification

...d to as a Vertex Buffer Object when storing vertices, or VBO for short, is what you're calling just a Buffer. Nothing gets saved back to the vertex array, glVertexAttribPointer works exactly like glVertexPointer or glTexCoordPointer work, just instead of named attributes, you get to provide a number...
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How to append rows to an R data frame

... Update Not knowing what you are trying to do, I'll share one more suggestion: Preallocate vectors of the type you want for each column, insert values into those vectors, and then, at the end, create your data.frame. Continuing with Julian's f3...
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How does a “stack overflow” occur and how do you prevent it?

How does a stack overflow occur and what are the best ways to make sure it doesn't happen, or ways to prevent one, particularly on web servers, but other examples would be interesting as well? ...
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Redirect stdout pipe of child process in Go

...dout, out) (see documentation for io.Copy and for os.Stdout), it will do what you want. (Disclaimer: not tested.) By the way, you'll probably want to capture standard-error as well, by using the same approach as for standard-output, but with cmd.StderrPipe and os.Stderr. ...
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Difference between int[] array and int array[]

... int array[] makes more sense to me. What do you think about this declaration? int[] x, y? Is y an array or not? Maybe it is, maybe it isn't. Only Java's gurus can answer with confidence.... – user1508893 Feb 18 '13 at 4:12...
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Checking if a variable is defined?

... along with what @AndrewMarshall said, avoid this idiom with anything that might return nil as well unless you really want to evaluate the expression every time it's called when it does return nil – nzifnab ...