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What exactly is metaprogramming?
...e new programs such as eval("x" + i). DoSomething() would affect an object called x1 when i is 1 and x2 when i is 2.
Finally, another common form of metaprogramming is when the program can change itself in non-trivial fashions. LISP is well known for this and is something Paul Graham championed abo...
Why do some claim that Java's implementation of generics is bad?
...y is backed by a byte[] for example, and no boxing is required)
Syntax for calling generic methods sucks (IMO)
Syntax for constraints can get confusing
Wildcarding is generally confusing
Various restrictions due to the above - casting etc
Good:
Wildcarding allows covariance/contravariance to be ...
How to detect orientation change in layout in Android?
...recreated when you switch to landscape. Instead, onConfigurationChanged is called. If this is undesired, you could use a variable to remember your activity's orientation and every time you go though onPause (for example) to check if the orientation is still the same.
– Elena
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Really killing a process in Windows
...ionally a program on a Windows machine goes crazy and just hangs. So I'll call up the task manager and hit the "End Process" button for it. However, this doesn't always work; if I try it enough times then it'll usually die eventually, but I'd really like to be able to just kill it immediately. On...
What is the difference between `let` and `var` in swift?
...ge.” iBooks. https://itunes.apple.com/WebObjects/MZStore.woa/wa/viewBook?id=881256329
EDIT
Because comments asking for adding other facts to the answer, converting this to community wiki answer. Feel free edit the answer to make it better.
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How can I check whether a radio button is selected with JavaScript?
...et's pretend you have HTML like this
<input type="radio" name="gender" id="gender_Male" value="Male" />
<input type="radio" name="gender" id="gender_Female" value="Female" />
For client-side validation, here's some Javascript to check which one is selected:
if(document.getElementById...
ASP.NET MVC Conditional validation
...
@RayLoveless you should be calling ModelState.IsValid - not calling Validate directly
– viperguynaz
Jan 11 '18 at 6:32
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Undo a Git commit after push using reverse patch?
...
simply use
for committed file:
git revert <SHA1 ID>
for non-committed file:
git reset --hard HEAD
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Can I change the fill color of an svg path with CSS?
...or example:
path {
fill: blue;
}
External CSS appears to override the path's fill attribute, at least in WebKit and Gecko-based browsers I tested. Of course, if you write, say, <path style="fill: green"> then that will override external CSS as well.
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Rotate axis text in python matplotlib
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Call this after plotting. Ie, first ax.plot(...) then plt.xticks(rotation=90)
– CGFoX
Mar 1 at 16:25
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