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Random record from MongoDB
...llection.
db.mycoll.aggregate([{ $sample: { size: 1 } }])
If you want to select the random document(s) from a filtered subset of the collection, prepend a $match stage to the pipeline:
// Get one random document matching {a: 10} from the mycoll collection.
db.mycoll.aggregate([
{ $match: { a:...
git pull aborted with error filename too long
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Try to keep your files closer to the file system root. More details : for technical reasons, Git for Windows cannot create files or directories when the absolute path is longer than 260 characters.
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How can I get a favicon to show up in my django app?
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In your settings.py add a root staticfiles directory:
STATICFILES_DIRS = [
os.path.join(BASE_DIR, 'static')
]
Create /static/images/favicon.ico
Add the favicon to your template(base.html):
{% load static %}
<link rel="shortc...
How to run Unix shell script from Java code?
...estScript testScript = new TestScript();
testScript.runScript("sh /root/Desktop/testScript.sh");
}
}
For further reference, An example is given on Apache Doc also.
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“document.getElementByClass is not a function”
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Thanks , that makes sense. Is the a function for selecting all classnames that is more browser compliant? Or is it possible to select a range for the array nodes? (ie. 0-100)?
– user547794
Sep 20 '11 at 5:27
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jquery data selector
I need to select elements based on values stored in an element's .data() object. At a minimum, I'd like to select top-level data properties using selectors, perhaps like this:
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How to automatically install Emacs packages by specifying a list of package names?
...nsure keyword to install packages automatically. This also sets up package-selected-packages if you need to access the package list through customize or programatically.
– Nick McCurdy
Apr 21 '17 at 22:16
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SQL Server principal “dbo” does not exist,
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Do Graphically.
Database right click-->properties-->files-->select database owner-->select [sa]-- ok
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Warning :-Presenting view controllers on detached view controllers is discouraged
...he warning in a push navigation, you can directly use :
[self.view.window.rootViewController presentViewController:viewController animated:YES completion:nil];
And then in your modal view controller, when everything is finished, you can just call :
[self dismissViewControllerAnimated:YES comple...
Parse date without timezone javascript
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The root of all evil in JavaScript dates and time is contained in your first sentence... It's just toString that CONVERTS it to your local timezone... Where is single responsibility in this? toString method should just stringify ...