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Why doesn't Python have a sign function?
...just use copysign and forget about it.
>>> math.copysign(1, -4)
-1.0
>>> math.copysign(1, 3)
1.0
If you get sick of passing two whole arguments, you can implement sign this way, and it will still be compatible with the IEEE stuff mentioned by others:
>>> sign = functoo...
鸿蒙创新能力测试流程 · App Inventor 2 中文网
...e(...)
检查点：
返回 JSON 中 protocol 应为 harmony-scenario/1.0。
sections 数组应存在且结构稳定。
sceneProfile、recommendedColumns、navigation 应与设计预期匹配。
5. 测试 HarmonyTemplateRenderer
目标：确认模板不仅能生成...
Can I change the viewport meta tag in mobile safari on the fly?
...rt]");
viewport.setAttribute('content', 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0');
Just change the parts you need and Mobile Safari will respect the new settings.
Update:
If you don't already have the meta viewport tag in the source, you can append it directly ...
Length of string in bash
...ars len: %s.\n" "$1" $bytlen ${#1} "$sreal"
}
will work as
strLen théorème
String 'théorème' is 10 bytes, but 8 chars len: $'th\303\251or\303\250me'
Useful printf correction tool:
If you:
for string in Généralités Language Théorème Février "Left: ←" "Yin Yang ☯";do
printf "...
How to get the input from the Tkinter Text Widget?
...rieving its input.
def retrieve_input():
input = self.myText_Box.get("1.0",END)
The first part, "1.0" means that the input should be read from line one, character zero (ie: the very first character). END is an imported constant which is set to the string "end". The END part means to read unti...
Pandas index column title or name
...d = {'Index Title': ['Apples', 'Oranges', 'Puppies', 'Ducks'],'Column 1': [1.0, 2.0, 3.0, 4.0]}
df = pd.DataFrame(d).set_index('Index Title')
print (df)
Column 1
Index Title
Apples 1.0
Oranges 2.0
Puppies 3.0
Ducks 4.0
print (df.inde...
Flat file databases [closed]
...thor Ryan McCue <cubegames@gmail.com>
* @package Lilina
* @version 1.0
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*/
/**
* Handler for persistent data files
*
* @package Lilina
*/
class DataHandler {
/**
* Directory to store data.
*
...
What is the minimum I have to do to create an RPM file?
...m is as follow - in which i suppose the
program is toybinprog with version 1.0, have a conf to be installed in /etc/toybinprog/toybinprog.conf and have a bin to be installed in /usr/bin called tobinprog :
1. create your rpm build env for RPM < 4.6,4.7
mkdir -p ~/rpmbuild/{RPMS,SRPMS,BUILD,SOURC...
Preserve HTML font-size when iPhone orientation changes from portrait to landscape
...S7?):
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">
You can also add , user-scalable=0 to turn off pinch zooming, so your website would behave like a native app. If your design brakes when user zooms, use this meta tag instead:
<meta name="vie...
Activity transition in Android
...tivities..
Create a file called fadein.xml in res/anim
<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/accelerate_interpolator"
android:fromAlpha="0.0" android:toAlpha="1.0" android:duration...