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How can I replace a newline (\n) using sed?
...stitute, /\n/ regex for new line, / / by a space, /g global match (as many times as it can)
sed will loop through step 1 to 3 until it reach the last line, getting all lines fit in the pattern space where sed will substitute all \n characters
Alternatives
All alternatives, unlike sed will not need...
Difference between as.POSIXct/as.POSIXlt and strptime for converting character vectors to POSIXct/PO
... of questions here that asks about how to convert character vectors to datetime classes. I often see 2 methods, the strptime and the as.POSIXct/as.POSIXlt methods. I looked at the 2 functions but am unclear what the difference is.
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Python date string to date object
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You can use strptime in the datetime package of Python:
>>> import datetime
>>> datetime.datetime.strptime('24052010', "%d%m%Y").date()
datetime.date(2010, 5, 24)
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Simplest way to profile a PHP script
...ng pprofp.
Example output:
Trace for /home/dan/testapd.php
Total Elapsed Time = 0.00
Total System Time = 0.00
Total User Time = 0.00
Real User System secs/ cumm
%Time (excl/cumm) (excl/cumm) (excl/cumm) Calls call s/call Memory Usage Name
--------------...
How can I convert spaces to tabs in Vim or Linux?
...o a tab, and let the following...
You need to repeat the command. How many times? Until you get a pattern not found. I cannot think of a way to automatize the process yet. But if you do:
`10@:`
You are probably done. This command repeats the last search/replace for 10 times. Its not likely your pro...
How to get datetime in JavaScript?
How to get date time in JavaScript with format 31/12/2010 03:55 AM?
7 Answers
7
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Format numbers to strings in Python
...2d" % (hours, minutes, seconds)
And for your specific case of formatting time, there’s time.strftime:
import time
t = (0, 0, 0, hours, minutes, seconds, 0, 0, 0)
time.strftime('%I:%M:%S %p', t)
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Generating all permutations of a given string
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"what is the time and space complexity of this?" without some sort of partial answer caching any algorithm that outputs permutation is o(n!) because the result set to the permutation question is factorial to the input.
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Which HTML5 tag should I use to mark up an author’s name?
...author/john-doe">John Doe</a></address>
on <time pubdate datetime="2011-08-28" title="August 28th, 2011">8/28/11</time>
</div>
</header>
<div class="article-content">
...
</div>
</article>
The pubdate a...
How do I replace whitespaces with underscore?
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@Lulu people use dashes because, for a long time, search engines treated dashes as word separators and so you'd get an easier time coming up in multi-word searches.
– James Bennett
Jun 19 '09 at 20:08
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