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App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
...ebView loads pages in overview mode
LongClickable
Returns whether text selection and context menu are enabled or not
OverScrollMode
Gets over scroll mode
PromptForPermission
Sets whether webview will prompt for permission and raise ‘OnPermissionRequest’ event or not else assume permi...
Confused about stdin, stdout and stderr?
...se the same library functions and interfaces (printf,
scanf, read, write, select, etc.) without worrying about whether the I/O stream
is connected to a keyboard, a disk file, a socket, a pipe, or some other I/O abstraction.
Most programs need to read input, write output, and log errors, so stdi...
How to use the ProGuard in Android Studio?
...efined_buildtype) under module tasks
Go to Build Variant in Left Panel and select the build from drop down
Go to project root directory in File Explorer and open cmd/terminal and run
Linux ./gradlew assembleRelease or assemble(#your_defined_buildtype)
Windows gradlew assembleRelease or assemb...
Test for existence of nested JavaScript object key
...th Claudiu's modification which is also significantly more performant than selected answer. See jsperf here jsperf.com/check-if-deep-property-exists-with-willnotthrow
– netpoetica
Nov 27 '14 at 5:35
...
How do I get the resource id of an image if I know its name?
...D of an ImageButton (as you would with R.id.name).
– Select0r
Jul 26 '10 at 19:19
42
...
HashMap get/put complexity
...te information out of thin air. Having a data structure of n element I can select one element in n different way. With that, I can encode log(n) bit information. If I can encode that in zero bit (that is what O(1) means) then I created an infinitely compressing ZIP algorithm.
...
How to vertically center content with variable height within a div?
...
Using the child selector, I've taken Fadi's incredible answer above and boiled it down to just one CSS rule that I can apply. Now all I have to do is add the contentCentered class name to elements I want to center:
.contentCentered {
...
Use jQuery to change an HTML tag?
...aAndEvents, deepWithDataAndEvents) {
// Use map to reconstruct the selector with newly created elements
return this.map(function() {
return jQuery.replaceTag(this, tagName, withDataAndEvents, deepWithDataAndEvents);
})
}
})
Note that this does not replace...
Using numpad in Vi (Vim) via PuTTY
...Mac Terminal app, try Preferences --> Profiles --> Advanced --> deselect "Allow VT100 application keypad mode"
– HaPsantran
Nov 12 '14 at 15:36
...
sed: print only matching group
... -d " " -f 6-7
Will result in output of:
2 3.4
-d sets the delimiter
-f selects the range of 'fields' to output, in this case, it's the 6th through 7th chunks of the original string. You can also specify the range as a list, such as 6,7.
...