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jQuery equivalent of getting the context of a Canvas
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Try:
$("#canvas")[0].getContext('2d');
jQuery exposes the actual DOM element in numeric indexes, where you can perform normal JavaScript/DOM functions.
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Should one use < or
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The first is more idiomatic. In particular, it indicates (in a 0-based sense) the number of iterations. When using something 1-based (e.g. JDBC, IIRC) I might be tempted to use &lt;=. So:
for (int i=0; i &lt; count; i++) // For 0-based APIs
for (int i=1; i &lt;= count; i++) // For 1-ba...
Golang: How to pad a number with zeros when printing?
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The fmt package can do this for you:
fmt.Printf("|%06d|%6d|\n", 12, 345)
Notice the 0 in %06d, that will make it a width of 6 and pad it with zeros. The second one will pad with spaces.
You can see it in action here: http://play.golang.org/p/cinDspMccp
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How can I increment a char?
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180
In Python 2.x, just use the ord and chr functions:
&gt;&gt;&gt; ord('c')
99
&gt;&gt;&gt; ord('c...
Declaring variables inside or outside of a loop
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20 Answers
20
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input type=file show only button
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answered Feb 11 '13 at 6:07
shibashiba
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How do I override nested NPM dependency versions?
...on:
{
"dependencies": {
"grunt-contrib-connect": {
"version": "0.3.0",
"from": "grunt-contrib-connect@0.3.0",
"dependencies": {
"connect": {
"version": "2.8.1",
"from": "connect@~2.7.3"
}
}
}
}
}
npm should automatically pick i...
How do I declare a 2d array in C++ using new?
...ize it using a loop, like this:
int** a = new int*[rowCount];
for(int i = 0; i &lt; rowCount; ++i)
a[i] = new int[colCount];
The above, for colCount= 5 and rowCount = 4, would produce the following:
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Select tableview row programmatically
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110
From reference documentation:
Calling this method does not cause the delegate to receive a t...
Why doesn't c++ have &&= or ||= for booleans?
... is then equivalent to static_cast&lt;int&gt;(b) &amp; 2, which results in 0, which is then converted back into a bool. So it’s true that the existence of an operator &amp;&amp;= would improve type safety.
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