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CSS: Change image src on img:hover

... <img src="https://cdn4.iconfinder.com/data/icons/imoticons/105/imoticon_15-128.png" /> <img src="https://cdn4.iconfinder.com/data/icons/imoticons/105/imoticon_12-128.png" /> </a> CSS a img:last-child { display: none; } a:hover img:last-child { display: block; } a:ho...
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Export a graph to .eps file with R

... there is an error : graph margins too large... – the_drug Mar 1 '11 at 9:42 6 make the plot dime...
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Fastest way to copy file in node.js

...er is this than executing the raw cp test.log newLog.log via require('child_process').exec? – Lance Pollard Jan 30 '13 at 20:03 ...
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What is the difference between print and puts?

... There is another thing ... extend the array class and override the to_s method. puts doesn't use the new to_s for an object of your new class while print does – kapv89 Oct 28 '12 at 18:30 ...
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How to install a specific version of a ruby gem?

... @abbood rake _10.1.1_ ... should work, for whoever wants to know :) – Koen. Jan 29 '17 at 10:00 ...
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Get current time in milliseconds in Python?

...sy. Thanks all, sorry for the brain fart. For reuse: import time current_milli_time = lambda: int(round(time.time() * 1000)) Then: >>> current_milli_time() 1378761833768 share | impr...
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IntelliJ inspection gives “Cannot resolve symbol” but still compiles code

Platform: IntelliJ Community Edition 10.0.3 SDK: jdk1.6.0_21 OS: Windows 7 51 Answers ...
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Calculate age given the birth date in the format YYYYMMDD

... I would go for readability: function _calculateAge(birthday) { // birthday is a date var ageDifMs = Date.now() - birthday.getTime(); var ageDate = new Date(ageDifMs); // miliseconds from epoch return Math.abs(ageDate.getUTCFullYear() - 1970); } Dis...
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How do I get a string format of the current date time, in python?

... #python3 import datetime print( '1: test-{date:%Y-%m-%d_%H:%M:%S}.txt'.format( date=datetime.datetime.now() ) ) d = datetime.datetime.now() print( "2a: {:%B %d, %Y}".format(d)) # see the f" to tell python this is a f string, no .format print(f"2b: {d:%B %d, %Y}") print(f"3...
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How to fix a locale setting warning from Perl?

... Your OS doesn't know about en_US.UTF-8. You didn't mention a specific platform, but I can reproduce your problem: % uname -a OSF1 hunter2 V5.1 2650 alpha % perl -e exit perl: warning: Setting locale failed. perl: warning: Please check that your locale ...