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How could the UNIX sort command sort a very large file?
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WARNING: This script starts one shell per chunk, for really large files, this could be hundreds.
Here is a script I wrote for this purpose. On a 4 processor machine it improved the sort performance by 100% !
#! /bin/ksh
MAX_LINES_PER_...
In what cases do I use malloc and/or new?
...early document two ways to make coding mistakes (the more easily caught () vs [] in new and the less easily caught mismatched array vs scaler new and delete). What is the motivation for using new/delete for blocks of raw memory?
– Ben Supnik
Feb 11 '10 at 20:3...
Best way to work with dates in Android SQLite [closed]
...eclared SQL type" (books.google.de/…). It sounds to me that in your Real vs. Integer vs. Text example, what's happening is this: SQLite just stores the text as Text in all of the tree columns. So, naturally the results are all good, storage still wasted. If just an Integer was used, then you shoul...
Simplest way to profile a PHP script
What's the easiest way to profile a PHP script?
13 Answers
13
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Javascript calculate the day of the year (1 - 366)
...(this);
j1.setMonth(0, 0);
return Math.round((this-j1)/8.64e7);
}
alert(new Date().dayOfYear())
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Get decimal portion of a number with JavaScript
... If speed is critical then n + "" is indeed better (see jsperf.com/number-vs-number-tostring-vs-string-number)
– Gabriel Hautclocq
Jul 11 '17 at 15:22
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How to select all instances of selected region in Sublime Text
...r the instance. BUT - obviously this is a question of tast much like: tabs vs spaces ... PS: Dear internet - I do not want to start another tabs vs spaces flame war here ... :)
– Mathias
Mar 1 '13 at 1:30
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What's the difference between ContentControl and ContentPresenter?
...tly wrote a post on my blog regarding these two controls:
ContentPresenter vs ContentControl
The ContentPresenter.ContentSource is what actually makes the biggest difference between the two classes.
ContentSource property makes sense only within a ControlTemplate; it determines which TemplatedParent...
Easy way to pull latest of all git submodules
...ter is the most up to date branch, etc...
Following this, create a simple script that does the following:
check git submodule status for "modified" repositories. The first character of the output lines indicates this. If a sub-repo is modified, you may NOT want to proceed.
for each repo listed,...
Bash script - variable content as a command to run
I have a Perl script that gives me a defined list random numbers that correspond to the lines of a file. Next I want to extract those lines from the file using sed .
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