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C# 4.0 optional out/ref arguments
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As already mentioned, this is simply not allowed and I think it makes a very good sense.
However, to add some more details, here is a quote from the C# 4.0 Specification, section 21.1:
Formal parameters of constructors, methods, indexers...
How to print to console when using Qt
... (and debugging). This should be the accepted answer because it's the only one which uses stdout AND qt.
– Marshall Eubanks
Sep 1 '14 at 6:41
1
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Count the number of commits on a Git branch
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none of these show the right number, for example master and branchname show the same number of commits.
– botbot
Jun 14 '13 at 0:10
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Convert an image to grayscale in HTML/CSS
...cale on hover */
img:hover {
-webkit-filter: grayscale(0);
filter: none;
}
<img src="http://lorempixel.com/400/200/">
What about Internet Explorer 10?
You can use a polyfill like gray.
share
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Check if object is a jQuery object
...&& (obj instanceof jQuery)) {...
– Harry Pehkonen
Sep 23 '15 at 13:42
That's not such a good example.. more li...
Convert Data URI to File then append to FormData
I've been trying to re-implement an HTML5 image uploader like the one on the Mozilla Hacks site, but that works with WebKit browsers. Part of the task is to extract an image file from the canvas object and append it to a FormData object for upload.
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Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
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works, but
for i=[1:inf]
% do something
end
does not (because this one would require allocating infinite memory). See Loren's blog for details.
Also note that you can iterate over cell arrays.
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“No X11 DISPLAY variable” - what does it mean?
...ctly (providing it isn't being messed with in the various dot files I mentioned above). In a "ssh -X" session, the DISPLAY environment variable will have a value like "localhost:11.0", which will point to the socket that ssh is tunnelling to your local box.
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Preview an image before it is uploaded
...or ` $('#blah').attr('src', e.target.result);` when you could have simply done document.getElementById('blah').src=e.target.result)
– EasyBB
Jul 21 '14 at 19:26
5
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How to prevent page scrolling when scrolling a DIV element?
...ll it on the overflowing element.
This solution has an advantage over the one Šime Vidas proposed, as it doesn't overwrite the scrolling behavior - it just blocks it when appropriate.
$.fn.isolatedScroll = function() {
this.bind('mousewheel DOMMouseScroll', function (e) {
var delta = ...