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How do you performance test JavaScript code?
...and easy to use, as are console.time(), console.profile(), and performance.now(). Chrome also gives you a timeline view which can show you what is killing your frame rate, where the user might be waiting, etc.
Finding documentation for all these tools is really easy, you don't need an SO answer for...
mongodb: insert if not exists
... specify what data you want to write:
data = {"$set":{"key2":"value2"}}
Now your selected document will update the value of "key2" only and leave everything else untouched.
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force client disconnect from server with socket.io and nodejs
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Edit: This is now possible
You can now simply call socket.disconnect() on the server side.
My original answer:
This is not possible yet.
If you need it as well, vote/comment on this issue.
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Why do we use __init__ in Python classes?
...bute", as opposed to "instance attributes" that are colour or legs above.
Now, to something less canine and more programming-related. As I write below, class to add things is not sensible - what is it a class of? Classes in Python make up of collections of different data, that behave similarly. Cla...
When do items in HTML5 local storage expire?
...parse(localStorage.getItem("key")),
dateString = object.timestamp,
now = new Date().getTime().toString();
compareTime(dateString, now); //to implement
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How to undo “git commit --amend” done instead of “git commit”
...happens on top of a different commit from where the current branch head is now.
# Move the current head so that it's pointing at the old commit
# Leave the index intact for redoing the commit.
# HEAD@{1} gives you "the commit that HEAD pointed at before
# it was moved to where it currently point...
Pushing an existing Git repository to SVN
...ository, using dcommit. That's all.
Keeping repositories in sync
You can now synchronise from SVN to Git, using the following commands:
git svn fetch
git rebase trunk
And to synchronise from Git to SVN, use:
git svn dcommit
Final note
You might want to try this out on a local copy, before a...
Append TimeStamp to a File Name
...by adding a time stamp to the file name with something like this DateTime.Now.ToString().Replace('/', '-').Replace(':', '.') .
Is there a better way to do this?
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Changing Ctrl + Tab behavior for moving between documents in Visual Studio
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This is the best answer now for visual studio 2010. This was very helpful. The accepted macro solution is inferior to this one.
– jmq
Mar 1 '11 at 21:19
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What are some methods to debug Javascript inside of a UIWebView?
... why something with Javascript isn't working inside of a UIWebView. To my knowledge, there is no way to set a breakpoint inside of XCode for a js file. No problemo, I'll just go back to 2004 and use alert statemen-- oh wait they don't seem to work inside of a UIWebView either!
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