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How to count occurrences of a column value efficiently in SQL?
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edited Oct 1 '09 at 16:38
answered Oct 1 '09 at 13:30
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How can I add CGPoint objects to an NSArray the easy way?
I have about 50 CGPoint objects that describe something like a "path", and I want to add them to an NSArray. It's going to be a method that will just return the corresponding CGPoint for an given index. I don't want to create 50 variables like p1 = ...; p2 = ..., and so on. Is there an easy way that...
How to check if an array field contains a unique value or another array in MongoDB?
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220
Try this out:
db.blogpost.find({ 'tags' : 'tag1'}); //1
db.blogpost.find({ 'tags' : { $all : [ ...
error: Libtool library used but 'LIBTOOL' is undefined
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edited Mar 10 at 21:02
S.S. Anne
13.1k66 gold badges2727 silver badges5959 bronze badges
a...
How to get the parents of a merge commit in git?
...es of its parents:
$ git log -1 395f65d
commit 395f65d438b13fb1fded88a330dc06c3b0951046
Merge: 9901923 d28790d
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git outputs parents according to their number: the first (leftmost) hash is for the first parent, and so on.
If all you want is just the hashes, the two equivalent choices are:
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Adding Permissions in AndroidManifest.xml in Android Studio?
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answered Jun 5 '13 at 19:50
vRallevvRallev
4,51433 gold badges2525 silver badges3434 bronze badges
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How do I revert master branch to a tag in git?
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160
You can do
git checkout master
git reset --hard tag_ABC
git push --force origin master
Please...
CleanWPPAllFilesInSingleFolder error makes my project no longer load
Using VS2012 I created a dynamic data project. It all worked and then I started configuring the web deployment settings. I am not sure what setting I changed exactly as there was no error. However when I try and load the solution I get the following error for the project and it will no longer load.
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Create a tag in a GitHub repository
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1590
You can create tags for GitHub by either using:
the Git command line, or
GitHub's web interfac...
Infinite scrolling with React JS
...te.recordsPerBody, this.state.total - 1);
var displayStart = Math.max(0, Math.floor(scroll / this.state.recordHeight) - this.state.recordsPerBody * 1.5);
var displayEnd = Math.min(displayStart + 4 * this.state.recordsPerBody, this.state.total - 1);
this.setState({
visibleStart:...