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What does the smiley face “:)” mean in CSS?

...wsers. Also there's a hack for <= IE 8: div { color: blue; /* All browsers */ color: purple\9; /* IE8 and earlier */ *color: pink; /* IE7 and earlier */ } However that's not a good idea, they don't validate. You always feel free to work with Conditional comments for targeting...
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Rails: fields_for with index?

...ould I do? – vidal Dec 21 '15 at 11:32 2 Brilliant. This should absolutely be the accepted answer...
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Delete sql rows where IDs do not have a match from another table

... Abel 51.6k1919 gold badges132132 silver badges214214 bronze badges answered Aug 1 '10 at 23:23 OMG PoniesOMG Ponies ...
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schema builder laravel migrations unique on two columns

...| edited Nov 13 '17 at 15:32 Chuck Le Butt 42.1k5555 gold badges167167 silver badges254254 bronze badges ...
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How do I pass a string into subprocess.Popen (using the stdin argument)?

...l command and get its exit status, and its output as a string back in one call: #!/usr/bin/env python3 from subprocess import run, PIPE p = run(['grep', 'f'], stdout=PIPE, input='one\ntwo\nthree\nfour\nfive\nsix\n', encoding='ascii') print(p.returncode) # -> 0 print(p.stdout) # -> fo...
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Cast Int to enum in Java

... 0 or 1, i.e. a valid ordinal for that enum. Note that in Java enums actually are classes (and enum values thus are objects) and thus you can't cast an int or even Integer to an enum. share | impr...
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Are braces necessary in one-line statements in JavaScript?

... expands the statement it will be required. This same practice follows in all C syntax style languages with bracing. C, C++, Java, even PHP all support one line statement without braces. You have to realize that you are only saving two characters and with some people's bracing styles you aren't eve...
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How do I avoid the specification of the username and password at every git push?

... #Your home directory ssh-keygen -t rsa #Press enter for all values For Windows (Only works if the commit program is capable of using certificates/private & public ssh keys) Use Putty Gen to generate a key Export the key as an open SSH key Here is a walkthrough on putty ...
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What is the difference between atomic / volatile / synchronized?

How do atomic / volatile / synchronized work internally? 7 Answers 7 ...
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Loaded nib but the 'view' outlet was not set

...s are right, but as I'm a newcomer it took me a little while to figure out all the steps to do that. Here's what worked for me: Open the XIB file causing problems Click on file's owner icon on the left bar (top one, looks like a yellow outlined box) If you don't see the right-hand sidebar, click o...