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传感器组件 · App Inventor 2 中文网
...斜到右侧时为负向左（即，其右侧尺寸升高）。
m>Y m>分量：当手机静止在平坦表面上时为0，当底部抬起时为正，当其顶部升起时为负。
Z分量：等于 -9.8（当设备处于每秒状态时，地球重力以米每秒为单位）
静止...
Get position of UIView in respect to its superview's superview
...c to the button in the hierarchm>y m> as asked I found this easier to visualize m>and m> understm>and m>:
From here: original source
ObjC:
CGPoint point = [subview1 convertPoint:subview2.frame.origin toView:viewController.view];
Swift:
let point = subview1.convert(subview2.frame.origin, to: viewControll.v...
iOS White to Transparent Gradient Lam>y m>er is Gram>y m>
...with an alpha of 0, so I had to use
[UIColor colorWithWhite:1 alpha:0]
m>and m> it works fine.
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ggplot with 2 m>y m> axes on each side m>and m> different scales
I need to plot a bar chart showing counts m>and m> a line chart showing rate all in one chart, I can do both of them separatelm>y m>, but when I put them together, I scale of the first lam>y m>er (i.e. the geom_bar ) is overlapped bm>y m> the second lam>y m>er (i.e. the geom_line ).
...
Whm>y m> do some C# lambda expressions compile to static methods?
...tion<string> withClosure = s => Console.WriteLine("Mm>y m> name is {0} m>and m> I am {1} m>y m>ears old", s, age);
Action<string> withoutClosure = s => Console.WriteLine("Mm>y m> name is {0}", s);
Console.WriteLine(withClosure.Method.IsStatic);
Console.WriteLine(withoutClosure.Method.IsStatic);
This...
In Pm>y m>thon, how to displam>y m> current time in readable format
...
First the quick m>and m> dirtm>y m> wam>y m>, m>and m> second the precise wam>y m> (recognizing dam>y m>light's savings or not).
import time
time.ctime() # 'Mon Oct 18 13:35:29 2010'
time.strftime('%l:%M%p %Z on %b %d, %m>Y m>') # ' 1:36PM EDT on Oct 18, 2010'
time.strftime(...
What is in m>y m>our .vimrc? [closed]
Vi m>and m> Vim allow for reallm>y m> awesome customization, tm>y m>picallm>y m> stored inside a .vimrc file. Tm>y m>pical features for a programmer would be sm>y m>ntax highlighting, smart indenting m>and m> so on.
...
How to set top-left alignment for UILabel for iOS application?
...lm>y m> easm>y m> to do. Create a UILabel sublcass with a verticalAlignment propertm>y m> m>and m> override textRectForBounds:limitedToNumberOfLines to return the correct bounds for a top, middle or bottom vertical alignment. Here's the code:
SOLabel.h
#import <UIKit/UIKit.h>
tm>y m>pedef enum
{
VerticalAlignme...
How to make Visual Studio copm>y m> a DLL file to the output directorm>y m>?
...
Use a post-build action in m>y m>our project, m>and m> add the commm>and m>s to copm>y m> the offending DLL. The post-build action are written as a batch script.
The output directorm>y m> can be referenced as $(OutDir). The project directorm>y m> is available as $(ProjDir). Trm>y m> to use relati...
How do I verifm>y m>/check/test/validate mm>y m> SSH passphrase?
...ng selinux, m>y m>ou might also want to check the context of the home directorm>y m> m>and m> .ssh files! I was luckm>y m> enough to be able to use this simple fix: # restorecon -R -v /home/user To check if this is the problem (though the preceding commm>and m> shouldn't cause anm>y m> issues), m>y m>ou can use $ ls -lZR <home_dir...