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Delete a key from a MongoDB document using Mongoose
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In early versions, you would have needed to drop down the node-mongodb-native driver. Each model has a collection object that contains all the methods that node-mongodb-native offers. So you can do the action in question by this:
User.collection.update({_id: user._id}, {$u...
List all environment variables from the command line
Is it possible to list all environment variables from a Windows' command prompt?
8 Answers
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Paste multiple times
...the contents of your yank. It's a bit more tedious to type, but "0p should do what you want.
Alternatively, don't select-and-replace the old lines up front. If you find those lines with a search, just hit n. over and over (after an initial p), then when they're all pasted, do ndd followed by as ma...
What is the fastest way to compare two sets in Java?
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firstSet.equals(secondSet)
It really depends on what you want to do in the comparison logic... ie what happens if you find an element in one set not in the other? Your method has a void return type so I assume you'll do the necessary work in this method.
More fine-grained control if you n...
Vim: Replacing a line with another one yanked before
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What I would do :
aG
Y
xG
Vp
You don't have to leave normal mode, but it does yank the line. You can however use V"0p which will always put the line yanked in step 2.
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“Insufficient Storage Available” even there is lot of free space in device memory
...4 MB of free space in device memory (internal). It happens even trying to download a new app.
27 Answers
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What is a semaphore?
...ghtclub.", args);
Bouncer.WaitOne();
// Do some dancing.
Console.WriteLine("Guest {0} is doing some dancing.", args);
Thread.Sleep(500);
// Let one guest out (release one semaphore).
Console.WriteLine("Guest {0} is l...
How to reset / remove chrome's input highlighting / focus border? [duplicate]
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Yep. Globally setting outline: none like some resets do is a mistake as it degrades keyboard accessibility, but it's fine to remove outline if you've got another cleart way of reflecting focusedness.
– bobince
May 31 '10 at 13:23
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Is there a way to “autosign” commits in Git with a GPG key?
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Note: if you don't want to add -S all the time to make sure your commits are signed, there is a proposal (branch 'pu' for now, December 2013, so no guarantee it will make it to a git release) to add a config which will take care of that o...
Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...ndefined behaviour. And this means anything can happen, and discussing why does it happen under the rules of C++ doesn't make sense.
C++11 draft N3337: §5.4:1
If during the evaluation of an expression, the result is not mathematically defined or not in the range of
representable values for ...