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Understanding promises in Node.js
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Promises in node.js promised to do some work and then had separate callbacks that would be executed for success and failure as well as handling timeouts. Another way to think of promises in node.js was that they were emitters that could emit only two events: success and error.
The cool thing ab...
Change name of iPhone app in Xcode 4
I want to change the name which is displayed below the app icon on the iPhone screen.
I use Xcode 4 and I have one target with keys:
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Case-Insensitive List Search
I have a list testList that contains a bunch of strings. I would like to add a new string into the testList only if it doesn't already exist in the list. Therefore, I need to do a case-insensitive search of the list and make it efficient. I can't use Contains because that doesn't take into acc...
How to use gitignore command in git
I'm working first time on git. I have pushed my branch on github and it pushed all the library and documents into the github. Now what can I do and how can I use gitignore command to avoid the same mistake again.
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Check if a given key already exists in a dictionary and increment it
...ctionary, how can I find out if a given key in that dictionary has already been set to a non-None value?
12 Answers
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Synchronous request in Node.js
If I need to call 3 http API in sequential order, what would be a better alternative to the following code:
18 Answers
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git: undo all working dir changes including new files
...ry including new untracked files. I know that git checkout -f does that, but it doesn't delete new untracked files created since last commit.
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Permanently add a directory to PYTHONPATH?
Whenever I use sys.path.append , the new directory will be added. However, once I close python, the list will revert to the previous (default?) values. How do I permanently add a directory to PYTHONPATH ?
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Ajax, back button and DOM updates
If javascript modifies DOM in page A, user navigates to page B and then hits back button to get back to the page A. All modifications to DOM of page A are lost and user is presented with version that was originally retrieved from the server.
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Check if a value is an object in JavaScript
How do you check if a value is an object in JavaScript?
46 Answers
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