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How to drop a database with Mongoose?
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You've got a typo -- an extra comma after the function(err)... should be: mongoose.connection.collections['collectionName'].drop( function(err) { console.log('collection dropped'); });
– arxpoetica
Aug 19 '12 at ...
Are there constants in JavaScript?
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Note that if you don't need cross-browser compatibility (or you're server-side programming in Rhino or Node.js) you can use the const keyword. It's currently supported by all modern browsers except for IE.
– Husky
Aug 1 '11 at 1...
Is it possible to capture a Ctrl+C signal and run a cleanup function, in a “defer” fashion?
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You can use the os/signal package to handle incoming signals. Ctrl+C is SIGINT, so you can use this to trap os.Interrupt.
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
go func(){
for sig := range c {
// sig is a ^C, handle it
}
}()
The ma...
javax.validation.ValidationException: HV000183: Unable to load 'javax.el.ExpressionFactory'
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Looks like they recommend both on the github page for SE environments: github.com/hibernate/hibernate-validator. The top one was sufficient for me though.
– vphilipnyc
Jun 29 '16 at 7:27
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How to set input type date's default value to today?
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226
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java: ArrayList - how can i check if an index exists?
... the correct is because the owner (Amarghosh) as answered my question in a comment to my question. HashTable will suite my needs much better.
– ufk
Jan 25 '10 at 11:31
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What do commas and spaces in multiple classes mean in CSS?
...<div class="grid_8">460px Wide</div>
</div>
As for the commas, it's applying one rule to multiple classes, like this.
.blueCheese, .blueBike {
color:blue;
}
It's functionally equivalent to:
.blueCheese { color:blue }
.blueBike { color:blue }
But cuts down on verbosity.
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Maven error “Failure to transfer…”
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73
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Create a .csv file with values from a Python list
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For Python 2, use 'w' as here: stackoverflow.com/questions/34283178/…
– banan3'14
Jan 3 '19 at 19:39
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Best practices/performance: mixing StringBuilder.append with String.concat
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Although newer versions of the compiler automatically optimize the + operator to a string builder it isn't necessarily a good thing to assume it will as older versions don't. There is a very important topic that is being ignored in this whole discussion w...