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How can I check whether a option already exist in select by JQuery
...it already exists:
$("#yourSelect option[value='yourValue']").length > 0;
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what is difference between success and .done() method of $.ajax
...more detailed information from here: https://stackoverflow.com/a/14754681/1049184
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How to update a pull request from forked repo?
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answered Mar 20 '12 at 16:09
shelhamershelhamer
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Android - Camera preview is sideways
...E)).getDefaultDisplay();
if(display.getRotation() == Surface.ROTATION_0) {
parameters.setPreviewSize(height, width);
mCamera.setDisplayOrientation(90);
}
if(display.getRotation() == Surface.ROTATION_90) {
parameters.setPreviewSize(widt...
Display image as grayscale using matplotlib
...me).convert("L")
arr = np.asarray(image)
plt.imshow(arr, cmap='gray', vmin=0, vmax=255)
plt.show()
If you want to display the inverse grayscale, switch the cmap to cmap='gray_r'.
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How to change line-ending settings
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edited May 26 '18 at 23:50
The Guy with The Hat
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Heroku Postgres - terminate hung query (idle in transaction)
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answered Jul 2 '12 at 10:46
tobixentobixen
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Directive isolate scope with ng-repeat scope in AngularJS
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203
Okay, through a lot of the comments above, I have discovered the confusion. First, a couple of ...
CSS3 :unchecked pseudo-class
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105
:unchecked is not defined in the Selectors or CSS UI level 3 specs, nor has it appeared in leve...
Create and append dynamically
...= 'block';
iDiv.className = 'block';
document.getElementsByTagName('body')[0].appendChild(iDiv);
// Now create and append to iDiv
var innerDiv = document.createElement('div');
innerDiv.className = 'block-2';
// The variable iDiv is still good... Just append to it.
iDiv.appendChild(innerDiv);
htt...