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How can I read large text files in Python, line by line, without loading it into memory?
I need to read a large file, line by line. Lets say that file has more than 5GB and I need to read each line, but obviously I do not want to use readlines() because it will create a very large list in the memory.
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How do I get the path of a process in Unix / Linux
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On Linux, the symlink /proc/<pid>/exe has the path of the executable. Use the command readlink -f /proc/<pid>/exe to get the value.
On AIX, this file does not exist. You could compare cksum <actual path to binary> and cksum /proc/<pid>/object/a.out.
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How can I get a view's current width and height when using autolayout constraints?
I'm not talking about the frame property, because from that you can only get the view's size in the xib. I'm talking about when the view is resized because of its constraints (maybe after a rotation, or in response to an event). Is there a way to get its current width and height?
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Equivalent of String.format in jQuery
I'm trying to move some JavaScript code from MicrosoftAjax to JQuery. I use the JavaScript equivalents in MicrosoftAjax of the popular .net methods, e.g. String.format(), String.startsWith(), etc. Are there equivalents to them in jQuery?
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How to convert floats to human-readable fractions?
Let's say we have 0.33 , we need to output 1/3 .
If we have 0.4 , we need to output 2/5 .
26 Answers
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What does the construct x = x || y mean?
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It means the title argument is optional. So if you call the method with no arguments it will use a default value of "Error".
It's shorthand for writing:
if (!title) {
title = "Error";
}
This kind of shorthand trick with boolean expressions is common in Perl too. W...
Common use-cases for pickle in Python
...d at the pickle documentation, but I don't understand where pickle is useful.
9 Answers
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Convert xlsx to csv in Linux with command line
I'm looking for a way to convert xlsx files to csv files on Linux.
10 Answers
10
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Git - How to use .netrc file on Windows to save user and password
Is it possible to use a .netrc file on Windows when I'm using Git to clone a remote repository with HTTP and user - password?
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multiprocessing.Pool: When to use apply, apply_async or map?
I have not seen clear examples with use-cases for Pool.apply , Pool.apply_async and Pool.map . I am mainly using Pool.map ; what are the advantages of others?
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