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MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
...findOrCreate like operations.
This is thanks to the $setOnInsert operator new to 2.4, which allows you to specify updates which should only happen when inserting documents.
This, combined with the upsert option, means you can use findAndModify to achieve an atomic findOrCreate-like operation.
db....
How to find files that match a wildcard string in Java?
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Consider DirectoryScanner from Apache Ant:
DirectoryScanner scanner = new DirectoryScanner();
scanner.setIncludes(new String[]{"**/*.java"});
scanner.setBasedir("C:/Temp");
scanner.setCaseSensitive(false);
scanner.scan();
String[] files = scanner.getIncludedFiles();
You'll need to reference a...
From Arraylist to Array
..., keep it an ArrayList. Else convert away!
ArrayList<Integer> foo = new ArrayList<Integer>();
foo.add(1);
foo.add(1);
foo.add(2);
foo.add(3);
foo.add(5);
Integer[] bar = foo.toArray(new Integer[foo.size()]);
System.out.println("bar.length = " + bar.length);
outputs
bar.length = 5
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git pushes with wrong user from terminal
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github identifies you by the ssh key it sees, not by any setting from git.
Therefore, you need to ensure that your work account's ssh key is not in your keyring when you try to push from your personal account and vice versa.
Use ...
Understanding the transclude option of directive definition?
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I think it is important to mention changes in the above behaviour in new version of AngularJS. I spent one hour trying to achieve above results with Angular 1.2.10.
Contents of the element with ng-transclude are not appended but completely replaced.
So in the above example, what you would a...
How to send parameters from a notification-click to an activity?
...t when launching the activity, and then in the activity class implement onNewIntent(Intent intent) event handler, that way you can access the new intent that was called for the activity (which is not the same as just calling getIntent(), this will always return the first Intent that launched your a...
Best way to get child nodes
...me: the whitespace textnode that childNodes picks up on is actually just a new line and a couple of tabs in the code. Is this due to the XHTML doctype? can this be resolved by enclosing the whitespace to struct code within the tags?
– Elias Van Ootegem
Apr 30 '...
Run javascript function when user finishes typing instead of on key up?
...t end up with dupes.
timer = setTimeout(function() { // assign timer a new timeout
x = $.getJSON(...); // run ajax request and store in x variable (so we can cancel)
}, 2000); // 2000ms delay, tweak for faster/slower
});
Hope this helps,
Marko
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bundle install returns “Could not locate Gemfile”
I'm new to Rails and am currently working through a guide.
The guide states:
9 Answers
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How to schedule a function to run every hour on Flask?
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I'm a little bit new with the concept of application schedulers, but what I found here for APScheduler v3.3.1 , it's something a little bit different. I believe that for the newest versions, the package structure, class names, etc., have chan...