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How to export table as CSV with headings on Postgresql?
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Delete a key from a MongoDB document using Mongoose
...collection.update({_id: user._id}, {$unset: {field: 1 }});
Since version 2.0 you can do:
User.update({_id: user._id}, {$unset: {field: 1 }}, callback);
And since version 2.4, if you have an instance of a model already you can do:
doc.field = undefined;
doc.save(callback);
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Reverting to a specific commit based on commit id with Git? [duplicate]
...ft c14809fa, git reset --soft TAG1, or git reset --soft c14809fafb08b9e96ff2879999ba8c807d10fb07 would all do the same thing.
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How to pass a variable from Activity to Fragment, and pass it back?
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To pass info to a fragment , you setArguments when you create it, and you can retrieve this ar...
When should I use require() and when to use define()?
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edited Jan 27 '16 at 15:14
IanS
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How to set up Android emulator proxy settings
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How to measure time taken between lines of code in python?
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edited Jun 1 at 20:01
phoenix
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Best way to store password in database [closed]
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edited May 23 '17 at 12:18
Community♦
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answered Jun 28 '09 at 1:56
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Typedef function pointer?
...int u, int v) {
return u*v;
}
t_somefunc afunc = &product;
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int x2 = (*afunc)(123, 456); // call product() to calculate 123*456
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How is attr_accessible used in Rails 4?
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edited Jul 1 '15 at 14:29
Rory O'Kane
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