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Plotting time in Python with Matplotlib
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184
You must first convert your timestamps to Python datetime objects (use datetime.strptime). Then...
How would one call std::forward on all arguments in a variadic function?
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87
On talk like a pirate day I use void f(Ar&& ...arg)
– woolstar
Jan 25 '14 at 7:41
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Visual Studio jump to next error shortcut?
When a compile fails in VB.NET in Visual Studio 2008, an Error List pops up at the bottom of the screen. To jump to an error, I double click on an error in the error list.
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jquery append to front/top of list
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38
Something simple like this ought to work:
$("ul").prepend("<li>ONE</li>");
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Canvas width and height in HTML5
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var canvas = document.getElementsByTagName('canvas')[0];
canvas.width = 800;
canvas.height = 600;
Note that this clears the canvas, though you should follow with ctx.clearRect( 0, 0, ctx.canvas.width, ctx.canvas.height); to handle those browsers that don't fully clear the canvas. You'll need to...
How do you get current active/default Environment profile programmatically in Spring?
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edited Dec 17 '18 at 9:18
Ivar
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answe...
REST response code for invalid data
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Darrel MillerDarrel Miller
126k2828 gold badges179179 silver badges234234 bronze badges
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Why use symbols as hash keys in Ruby?
...ed keys" against each other.
Long answer:
https://web.archive.org/web/20180709094450/http://www.reactive.io/tips/2009/01/11/the-difference-between-ruby-symbols-and-strings
http://www.randomhacks.net.s3-website-us-east-1.amazonaws.com/2007/01/20/13-ways-of-looking-at-a-ruby-symbol/
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Update all values of a column to lowercase
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edited Oct 5 '18 at 8:29
answered May 28 '11 at 9:53
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Check that Field Exists with MongoDB
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188
Use $ne (for "not equal")
db.collection.find({ "fieldToCheck": { $exists: true, $ne: null } })...