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Get last n lines of a file, similar to tail
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This may be quicker than yours. Makes no assumptions about line length. Backs through the file one block at a time till it's found the right number of '\n' characters.
def tail( f, lines=20 ):
total_lines_wanted = lines
BLOCK...
How to see which flags -march=native will activate?
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You can use the -Q --help=target options:
gcc -march=native -Q --help=target ...
The -v option may also be of use.
You can see the documentation on the --help option here.
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Why can't non-default arguments follow default arguments?
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All required parameters must be placed before any default arguments. Simply because they are mandatory, whereas default arguments are not. Syntactically, it would be impossible for the interpreter to decide which values match which...
WebSockets protocol vs HTTP
...transfer. However, this doesn't help with client to server latency which requires a new connection to be established for each client to server message.
Your 48 byte HTTP handshake is not realistic for real-world HTTP browser connections where there is often several kilobytes of data sent as part of...
Using jQuery To Get Size of Viewport
... jQuery('body')
.prepend('<div id="viewportsize" style="z-index:9999;position:fixed;bottom:0px;left:0px;color:#fff;background:#000;padding:10px">Height: ' + height + '<br>Width: ' + width + '</div>');
jQuery(window)
.resize(function() {
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How do I use prepared statements in SQlite in Android?
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Note that SQLiteStatement.bindXXX() has a 1-based index, not 0-based like the most one are.
– Simulant
Nov 14 '13 at 9:02
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Determine which element the mouse pointer is on top of in JavaScript
...useIsOver = document.elementFromPoint(x, y);
document.elementFromPoint
jQuery event object
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How to find out which processes are using swap space in Linux?
...s, but they don't seem to do anything on my machine): htop.sourceforge.net/index.php?page=faq
– yukondude
Nov 11 '09 at 19:25
6
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Get file name from URL
.... E.g. "example.com/file.xml?date=2010-10-20"
– Luke Quinane
Aug 13 '13 at 5:14
18
FilenameUtils....
Python argparse mutual exclusive group
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This does not answer the question because it does not allow you to make "noname" commands and achieve what OP asked for [-a xxx | [-b yyy -c zzz]]
– The Godfather
May 15 '19 at 11:37
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