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App Inventor 2 中文网原创内容 · App Inventor 2 中文网
...解决】Runtime Error：No virtual method isDeniedPermission(Ljava/lang/String;)
【已解决】Sorry, cannot package projects larger than 30 MB. Yours is 36.88 MB.
【已解决】Component “com.google.appinventor.components.runtime.Button” does not specify permissionConstraints
【已解...
What is PostgreSQL explain telling me exactly?
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I am mystified why people think slide decks make good technical documentation. A video of the talk might be helpful, but the information density of that slide deck is very close to zero. In the first six slides (1/5th of the total), there is exactly 1 sentenc...
How do I read the first line of a file using cat?
... IFS prevents leading and trailing whitespace from being stripped from the string that's read.
– Charles Duffy
May 24 '18 at 15:39
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Hide all warnings in ipython
I need to produce a screencast of an ipython session, and to avoid confusing viewers, I want to disable all warnings emitted by warnings.warn calls from different packages. Is there a way to configure the ipythonrc file to automatically disable all such warnings?
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Understanding slice notation
...first character numbered 0. Then the right edge of the last character of a string of n characters has index n.
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What's the difference between deadlock and livelock?
...c final Lock lock2 = new ReentrantLock(true);
public static void main(String[] args) {
Thread threadA = new Thread(DeadlockSample::doA,"Thread A");
Thread threadB = new Thread(DeadlockSample::doB,"Thread B");
threadA.start();
threadB.start();
}
public st...
What is the easiest way to disable/enable buttons and links (jQuery + Bootstrap)
...'input[type="submit"], input[type="button"], button').disable(false);
JSFiddle disabled button and input demo.
Otherwise you'd make use of jQuery's prop() method:
$('button').prop('disabled', true);
$('button').prop('disabled', false);
Anchor Tags
It's worth noting that disabled isn't a val...
Suppress or Customize Intro Message in Fish Shell
... it doesn't anymore; now it seems you need to set the variable to an empty string.
– mjs
Jun 13 '17 at 7:34
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In Vim, how do I apply a macro to a set of lines?
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@GabeMoothart The ! avoids user remapping of keys. You may not need it, but an answer that works for everyone requires it.
– Judge Maygarden
May 3 '16 at 15:08
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Is there a function to deselect all text using JavaScript?
...election().removeAllRanges(); works in all current browsers. Live demo: jsfiddle.net/hWMJT/1
– Šime Vidas
Jul 3 '11 at 12:18
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