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MongoDB: Find a document by non-existence of a field?
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Try the $exists operator:
db.mycollection.find({ "price" : { "$exists" : false } })
and see its documentation.
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Which websocket library to use with Node.js? [closed]
Currently there is a plethora of websocket libraries for node.js, the most popular seem to be:
3 Answers
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How to save a git commit message from windows cmd?
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It's then <esc> ZZ, to make sure you are in normal mode.
– Ikke
Jan 14 '15 at 10:38
i lo...
Visual Studio Wcf Test Client - entering an Int array
...client found in this location relative to your Visual Studio install directory:
1 Answer
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Git Pull While Ignoring Local Changes?
Is there a way to do a git pull that ignores any local file changes without blowing the directory away and having to perform a git clone ?
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Clear Application's Data Programmatically
...plicationUserData().
I highly recommend using it in new applications:
import android.os.Build.*;
if (VERSION_CODES.KITKAT <= VERSION.SDK_INT) {
((ActivityManager)context.getSystemService(ACTIVITY_SERVICE))
.clearApplicationUserData(); // note: it has a return value!
} else {
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How to git log from all branches for the author at once?
I need to get the report of all commits that the author did. So far, I have the script that wraps the following command:
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pip issue installing almost any library
...ut to easy_install to get most of what I needed done, which has generally worked. However, now I'm trying to download the nltk library, and neither is getting the job done.
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“unadd” a file to svn before commit
... a recursive svn add/commit, and a folder which did not have the proper ignore properties was included. I've got about 100 uploaded binary files versioned now, but I haven't committed yet.
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Vagrant reverse port forwarding?
I'm working on a web services architecture. I've got some software that I need to run on the native host machine, not in Vagrant. But I'd like to run some client services on the guest.
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