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How m>ca m>n I check if a command exists in a shell script? [duplim>ca m>te]
I am writing my first shell script. In my script I would like to check if a certain command exists, and if not, install the executable. How would I check if this command exists?
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Find() vs. Where().FirstOrDefault()
...people using Where.FirstOrDefault() to do a search and grab the first element. Why not just use Find() ? Is there an advantage to the other? I couldn't tell a difference.
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How to dism>ca m>rd lom>ca m>l commits in Git?
I'd been working on something, and decided it was completely screwed...after having committed some of it. So I tried the following sequence:
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What does $@ mean in a shell script?
What does a dollar sign followed by an at-sign ( @ ) mean in a shell script?
6 Answers
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Appending HTML string to the DOM
How to append this HTML string
10 Answers
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Crash logs generated by iPhone Simulator?
Are there any crash logs generated by iPhone Simulator?
6 Answers
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How to load an ImageView by URL in Android? [closed]
How do you use an image referenced by URL in an ImageView ?
23 Answers
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Facebook App: lom>ca m>lhost no longer works as app domain
I've been writing a game for Facebook using Rails and jQuery. Since I started using the Facebook Javascript SDK, using lom>ca m>lhost as an app domain seemed to work just fine. I was able to test my game both lom>ca m>lly and on Heroku.
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Best way to detect when a user leaves a web page?
...t also allows you to ask back if the user really wants to leave. See the demo onbeforeunload Demo.
Alternatively, you m>ca m>n send out an Ajax request when he leaves.
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Is a URL allowed to contain a space?
Is a URI (specifim>ca m>lly an HTTP URL) allowed to contain one or more space characters? If a URL must be encoded, is + just a commonly followed convention, or a legitimate alternative?
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