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How can I check if a program exists from a Bash script?
... validate that a program exists, in a way that will either return an error and exit, or continue with the script?
37 Answer...
How to get Core Data object from specific Object ID?
...se comment.)
[eta.: Another important difference between the first method and the other two is that existingObjectWithID:error: never returns a fault; it always fetches the whole object for you. If you're trying to avoid that (e.g. working with an expensive-to-fetch object with a big blob property)...
How do I hide .class files from the Open Resource dialog in Eclipse?
...to have edit any working sets. I just want a way to, across all workspaces and projects, prevent .class files from ever showing in the Open Resource Dialog. Is there a way to do this?
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You can't specify target table for update in FROM clause
...you should only be selecting the columns you need in that innermost query, and adding a good WHERE clause to limit the results, too.
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Lock-free multi-threading is for real threading experts
I was reading through an answer that Jon Skeet gave to a question and in it he mentioned this:
6 Answers
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How to remove an HTML element using Javascript?
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What's happening is that the form is getting submitted, and so the page is being refreshed (with its original content). You're handling the click event on a submit button.
If you want to remove the element and not submit the form, handle the submit event on the form instead, and ...
Is the list of Python reserved words and builtins available in a library?
Is the list of Python reserved words and builtins available in a library? I want to do something like:
1 Answer
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Making 'git log' ignore changes for certain paths
...now (git 1.9/2.0, Q1 2014) with the introduction pathspec magic :(exclude) and its short form :! in commit ef79b1f and commit 1649612, by
Nguyễn Thái Ngọc Duy (pclouds), documentation can be found here.
You now can log everything except a sub-folder content:
git log -- . ":(exclude)sub"
git lo...
How to make a node.js application run permanently?
On a Debian server, I installed Node.js. I understand how to launch an app from putty with this command line:
19 Answers
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How can I convert a Unix timestamp to DateTime and vice versa?
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Time in Windows is handled by HAL and only close-to-accurate within 1ms to 15ms. More info is available in Windows Internals around page 112, if anyone is interested.
– Jim Schubert
Apr 13 '12 at 14:59
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