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MySQL select 10 random rows from 600K rows fast
...s is equal, and that there can be gaps in the id list. See the article for more advanced examples
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Valid to use (anchor tag) without href attribute?
...nts do this by default, but non-button elements do not. Sometimes it makes more sense to bind the click trigger to a different key. For example, a "help" button in a web app might be bound to F1.
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Applications are expected to have a root view controller at the end of application launch
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“Invalid signature file” when attempting to run a .jar
...his jar have these files. When you make an uber jar, you're adding a bunch more files to the jar, and thus the signature is not correct. If you really wanted, you could re-sign the new jar, but of course it would be with your signature, not the old one. Alternatively, you could not distribute the ub...
How to find out if you're using HTTPS without $_SERVER['HTTPS']
... would have to test using the HTTP_X_FORWARDED_PROTO header, but it's much more complex to do; see latest comments below this answer.
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const vs constexpr on variables
...e there is a difference. Let's rename them so that we can talk about them more easily:
const double PI1 = 3.141592653589793;
constexpr double PI2 = 3.141592653589793;
Both PI1 and PI2 are constant, meaning you can not modify them. However only PI2 is a compile-time constant. It shall be in...
Is it possible to “decompile” a Windows .exe? Or at least view the Assembly?
...y interactively.
With a disassembler, you can view the program assembly in more detail.
With a decompiler, you can turn a program back into partial source code, assuming you know what it was written in (which you can find out with free tools such as PEiD - if the program is packed, you'll have to un...
Check if a string is html or not
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I'm honestly surprised I didn't get more downvotes for the snark.
– zzzzBov
Mar 17 '13 at 17:56
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Setting unique Constraint with fluent API?
...ew IndexAnnotation(new IndexAttribute()));
Practical Example:
Here is a more realistic example. It adds a unique index on multiple properties: User.FirstName and User.LastName, with an index name "IX_FirstNameLastName"
modelBuilder
.Entity<User>()
.Property(t => t.FirstName)
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inline conditionals in angular.js
...at thing
If you're using Angular <= 1.1.4 then this answer will do:
One more answer for this. I'm posting a separate answer, because it's more of an "exact" attempt at a solution than a list of possible solutions:
Here's a filter that will do an "immediate if" (aka iif):
app.filter('iif', functio...