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Hexadecimal To Decimal in Shell Script
... to do it in the shell or with an external program:
With bash:
$ echo $((16#FF))
255
with bc:
$ echo "ibase=16; FF" | bc
255
with perl:
$ perl -le 'print hex("FF");'
255
with printf :
$ printf "%d\n" 0xFF
255
with python:
$ python -c 'print(int("FF", 16))'
255
with ruby:
$ ruby -e '...
Favicon dimensions? [duplicate]
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Short answer
The favicon is supposed to be a set of 16x16, 32x32 and 48x48 pictures in ICO format. ICO format is different than PNG. Non-square pictures are not supported.
To generate the favicon, for many reasons explained below, I advise you to use this favicon generator. Fu...
What is the difference between int, Int16, Int32 and Int64?
What is the difference between int , System.Int16 , System.Int32 and System.Int64 other than their sizes?
10 Answers
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Does a favicon have to be 32x32 or 16x16?
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Update for 2020: Sticking to the original question of 16x16 versus 32x32 icons: the current recommendation should be to provide a 32x32 icon, skipping 16x16 entirely. All current browsers and devices support 32x32 icons. The icon will routinely be upscaled to as much as 192x192 ...
How to create GUID / UUID?
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edited May 24 at 17:16
community wiki
23 ...
How to manually create icns files using iconutil?
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The following files should exist: icon_16x16.png, icon_16x16@2x.png, icon_32x32.png, icon_32x32@2x.png, icon_128x128.png, icon_128x128@2x.png, icon_256x256.png, icon_256x256@2x.png. The @2x files should be stored at 144 pixels per inch while the others should be ...
How to avoid “cannot load such file — utils/popen” from homebrew on OSX
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answered Feb 19 '16 at 1:48
Vineet KapoorVineet Kapoor
8,17911 gold badge77 silver badges1414 bronze badges
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How do I prevent angular-ui modal from closing?
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edited Mar 18 '16 at 12:16
mauris
38.4k1414 gold badges9191 silver badges128128 bronze badges
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App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
...服务UUID和特征UUID是必需的。shortFloat 参数指示浮点数是 16 位半精度浮点数还是 32 位单精度浮点数。读取浮点数后，将触发 FloatsReceived 事件。
参数:
serviceUuid (text) —
在读取或注册调用中传递的服务UUID。
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How to check if hex color is “too black”?
...ter colour:
var c = c.substring(1); // strip #
var rgb = parseInt(c, 16); // convert rrggbb to decimal
var r = (rgb >> 16) & 0xff; // extract red
var g = (rgb >> 8) & 0xff; // extract green
var b = (rgb >> 0) & 0xff; // extract blue
var luma = 0.2126 * r +...