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How does !!~ (not not tilde/bang bang tilde) alter the result of a 'contains/included' Array method

...returns the index of the item in the array if the first argument is found, and it returns -1 if its not found. This means that if you're looking for a boolean of "is this value in the array?", you can't do a boolean comparison, since -1 is a truthy value, and when $.inArray returns 0 (a falsy value)...
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How do I create a crontab through a script

...a text file with the job configured, then copy it to the cron spool folder and make sure it has the right permissions (600). share | improve this answer | follow ...
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android fragment onRestoreInstanceState

...r configuration changes, but what if you go to an activity from a fragment and then go back to the fragment? – speedynomads Jun 4 '13 at 16:41 1 ...
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Setting git parent pointer to a different parent

... Using git rebase. It's the generic "take commit(s) and plop it/them on a different parent (base)" command in Git. Some things to know, however: Since commit SHAs involve their parents, when you change the parent of a given commit, its SHA will change - as will the SHAs of ...
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Isn't “package private” member access synonymous with the default (no-modifier) access?

...ion uses, along with the usage of "default access." Aren't package-private and default access both synonymous with protected? ...
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Floating point vs integer calculations on modern hardware

I am doing some performance critical work in C++, and we are currently using integer calculations for problems that are inherently floating point because "its faster". This causes a whole lot of annoying problems and adds a lot of annoying code. ...
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What is the best practice for dealing with passwords in git repositories?

I've got a little Bash script that I use to access twitter and pop up a Growl notification in certain situations. What's the best way to handle storing my password with the script? ...
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Download File Using Javascript/jQuery

... answered Sep 20 '10 at 7:27 Randy the DevRandy the Dev 20.8k66 gold badges4141 silver badges5353 bronze badges ...
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What's the difference of “./configure” option “--build”, “--host” and “--target”?

The script ./configure accepts 3 options --build , --host and --target . I'm confusing their roles. What's the difference and semantics of them? ...
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Why is vertical-align: middle not working on my span or div?

...ng happens. I've tried changing the display properties of both elements, and nothing seems to work. 16 Answers ...