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R - Concatenate two dataframes?
... line adds column b to data frame b.
Results
> a <- data.frame(a=c(0,1,2), b=c(3,4,5), c=c(6,7,8))
> a
a b c
1 0 3 6
2 1 4 7
3 2 5 8
> b <- data.frame(a=c(9,10,11), c=c(12,13,14))
> b
a c
1 9 12
2 10 13
3 11 14
> b$b <- NA
> b
a c b
1 9 12 NA
2 10 13 NA
3 11...
Angular.js ng-repeat across multiple tr's
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edited May 23 '17 at 12:10
Community♦
111 silver badge
answered Oct 19 '12 at 20:19
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TypeScript: casting HTMLElement
...var script = <HTMLScriptElement>document.getElementsByName("script")[0];
However, unfortunately you cannot do:
var script = (<HTMLScriptElement[]>document.getElementsByName(id))[0];
You get the error
Cannot convert 'NodeList' to 'HTMLScriptElement[]'
But you can do :
(<HTMLS...
How to calculate a mod b in Python?
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answered Jun 13 '09 at 16:59
eduffyeduffy
34.1k99 gold badges9090 silver badges8989 bronze badges
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vertical & horizontal lines in matplotlib
...is range, regardless of coordinates. The parameters xmin or ymin use value 0.0 as the minimum of the axis and 1.0 as the maximum of the axis.
Instead, use plt.plot((x1, x2), (y1, y2), 'k-') to draw a line from the point (x1, y1) to the point (x2, y2) in color k. See pyplot.plot.
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Easy way to concatenate two byte arrays
...ghtforward:
byte[] c = new byte[a.length + b.length];
System.arraycopy(a, 0, c, 0, a.length);
System.arraycopy(b, 0, c, a.length, b.length);
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C# 'is' operator performance
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answered Mar 26 '09 at 16:09
Andrew HareAndrew Hare
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Use jQuery to get the file input's selected filename without the path
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edited Jun 16 '11 at 0:37
answered Jun 16 '11 at 0:21
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Clojure 1.2.1/1.3/1.4 'proxy generated in Grails 2.0.0 runtime fails. 1.2.0 is fine
I'm working on extending the Grails Clojure plugin in Grails 2.0.0 (and 2.1.0-SNAPSHOT) and I wanted to update it to Clojure 1.3.0 and add clojure.tools.logging .
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How can I replace a regex substring match in Javascript?
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var str = 'asd-0.testing';
var regex = /(asd-)\d(\.\w+)/;
str = str.replace(regex, "$11$2");
c...