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How to fix the aspect ratio in ggplot?
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110
In ggplot the mechanism to preserve the aspect ratio of your plot is to add a coord_fixed() laye...
'str' object does not support item assignment in Python
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105
In Python, strings are immutable, so you can't change their characters in-place.
You can, howe...
How should one use std::optional?
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edited May 11 '15 at 8:00
thecoshman
7,57655 gold badges5050 silver badges7777 bronze badges
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What's the best way to set a single pixel in an HTML5 canvas?
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var d = id.data; // only do this once per page
d[0] = r;
d[1] = g;
d[2] = b;
d[3] = a;
myContext.putImageData( id, x, y );
Use fillRect() to draw a pixel (there should be no aliasing issues):
ctx.fillStyle = "rgba("+r+","+g+","+b+","+(a/255)+")";
ctx.fillRect...
How do I Convert DateTime.now to UTC in Ruby?
...DateTime and not Time? Time should include everything you need:
irb(main):016:0> Time.now
=> Thu Apr 16 12:40:44 +0100 2009
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Get average color of image via Javascript
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150
AFAIK, the only way to do this is with <canvas/>...
DEMO V2: http://jsfiddle.net/xLF38/81...
scipy.misc module has no attribute imread?
...n.PngImageFile...
– Allan Ruin
Nov 10 '14 at 9:24
21
It should be Pillow instead of PIL now. Refe...
How to allocate aligned memory only using the standard library?
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+500
Original answer
{
void *mem = malloc(1024+16);
void *ptr = ((char *)mem+16) & ~ 0x0F;
memset_16aligned(ptr, 0, 1024)...
Using sed and grep/egrep to search and replace
I am using egrep -R followed by a regular expression containing about 10 unions, so like:
.jpg | .png | .gif etc. This works well, now I would like to replace all strings found with .bmp
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PHP memory profiling
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Xdebug reimplemented memory tracing in 2.6 (2018-01-29) which can be used in Qcachegrind or simi...