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What is the difference between typeof and instanceof and when should one be used vs. the other?
...alse
true instanceof Boolean; // false
typeof true == 'boolean'; // true
99.99 instanceof Number; // false
typeof 99.99 == 'number'; // true
function() {} instanceof Function; // true
typeof function() {} == 'function'; // true
Use instanceof for complex built in types:
/regularexpression/ ins...
RSA Public Key format
...ns: SEQUENCE
4:d=1 hl=4 l= 257 prim: INTEGER :FB1199FF0733F6E805A4FD3B36CA68E94D7B974621162169C71538A539372E27F3F51DF3B08B2E111C2D6BBF9F5887F13A8DB4F1EB6DFE386C92256875212DDD00468785C18A9C96A292B067DDC71DA0D564000B8BFD80FB14C1B56744A3B5C652E8CA0EF0B6FDA64ABA47E3A4E89423C0212...
UILabel Align Text to center
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Linus Unnebäck
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answered Jul 12 '12 at 8:20
AravindhanAravindhan
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Why are Subjects not recommended in .NET Reactive Extensions?
...sage2(), and message3() as messages are generated. It seems like messageX[123] would call OnNext on a subject, but is there a better way?
– James Moore
Apr 11 '16 at 17:18
1
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Modulo operation with negative numbers
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C99 requires that when a/b is representable:
(a/b) * b + a%b shall equal a
This makes sense, logically. Right?
Let's see what this leads to:
Example A. 5/(-3) is -1
=> (-1) * (-3) + 5%(-3) = 5
This can only happen i...
Standard alternative to GCC's ##__VA_ARGS__ trick?
There is a well-known problem with empty args for variadic macros in C99.
10 Answers
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How efficient is locking an unlocked mutex? What is the cost of a mutex?
...
123
I have the choice in between either having a bunch of mutexes or a single one for an object...
Casting a variable using a Type variable
...andling an actual type. With proper interfaces that shouldn't be necessary 99.9% of the times. There are perhaps a few edge cases when it comes to reflection that it might make sense, but I would recommend to avoid those cases.
Edit 2:
Few extra tips:
Try to keep your code as type-safe as possib...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
...line options:
gcc -std=c90 -pedantic ... # or -std=c89 or -ansi
gcc -std=c99 -pedantic
gcc -std=c11 -pedantic
See the gcc manual for more details.
gcc will be phasing out these definitions in future releases, so you shouldn't write code that depends on them. If your program needs to know whether...
What is your favorite C programming trick? [closed]
...
C99 offers some really cool stuff using anonymous arrays:
Removing pointless variables
{
int yes=1;
setsockopt(yourSocket, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int));
}
becomes
setsockopt(yourSocket, SOL_SOC...