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How to Copy Contents of One Canvas to Another Canvas Locally
...tion passing it the source canvas directly
destCtx.drawImage(sourceCanvas, 0, 0);
Way faster than using an ImageData object or Image element.
Note that sourceCanvas can be a HTMLImageElement, HTMLVideoElement, or a HTMLCanvasElement. As mentioned by Dave in a comment below this answer, you cannot...
C compile error: “Variable-sized object may not be initialized”
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What integer hash function are good that accepts an integer hash key?
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edited Mar 21 '09 at 22:53
Svante
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What happens if you static_cast invalid value to enum class?
...ring with a quote from the C++11 and C++14 Standards:
[expr.static.cast]/10
A value of integral or enumeration type can be explicitly converted to an enumeration type. The value is unchanged if the original value is within the range of the enumeration values (7.2). Otherwise, the resulting valu...
SQL Server indexes - ascending or descending, what difference does it make?
...ndex on a column or number of columns in MS SQL Server (I'm using version 2005), you can specify that the index on each column be either ascending or descending. I'm having a hard time understanding why this choice is even here. Using binary sort techniques, wouldn't a lookup be just as fast either ...
Get last result in interactive Python shell
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Underscore.
>>> 5+5
10
>>> _
10
>>> _ + 5
15
>>> _
15
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How do I put an already-running process under nohup?
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edited May 21 '14 at 0:19
the Tin Man
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How can I make setInterval also work when a tab is inactive in Chrome?
I have a setInterval running a piece of code 30 times a second. This works great, however when I select another tab (so that the tab with my code becomes inactive), the setInterval is set to an idle state for some reason.
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JPanel Padding in Java
...ur JPanel.
Example:
JPanel p =new JPanel();
p.setBorder(new EmptyBorder(10, 10, 10, 10));
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What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
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– Jonathan Leffler
Aug 1 '13 at 4:03
7
Technically, $(echo foo) creates a command substitution,...