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Bash array with spaces in elements
...he syntax is baffling. I'd be extremely grateful if you could go into it a bit more? Particularly expands to a single word with the value of each array member separated by the first character of the IFS special variable
– CL22
Oct 6 '16 at 9:52
...
What would cause an algorithm to have O(log n) complexity?
...s.
Processing values one digit at a time
How many digits are in the base-10 number n? Well, if there are k digits in the number, then we'd have that the biggest digit is some multiple of 10k. The largest k-digit number is 999...9, k times, and this is equal to 10k + 1 - 1. Consequently, if we k...
Why does C++ rand() seem to generate only numbers of the same order of magnitude?
... @TallaronMathias Consider truncating the number through >> bitshifting -- this will give you smaller numbers. (Or taking a modulus with %.)
– Sean Allred
Jun 20 '13 at 16:40
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Concept behind these four lines of tricky C code
... number 7709179928849219.0 has the following binary representation as a 64-bit double:
01000011 00111011 01100011 01110101 01010011 00101011 00101011 01000011
+^^^^^^^ ^^^^---- -------- -------- -------- -------- -------- --------
+ shows the position of the sign; ^ of the exponent, and - of the ...
How do you reverse a string in place in C or C++?
...eplace SWP with a safe inline function using a tmp variable.
#include <bits/types.h>
#include <stdio.h>
#define SWP(x,y) (x^=y, y^=x, x^=y)
void strrev(char *p)
{
char *q = p;
while(q && *q) ++q; /* find eos */
for(--q; p < q; ++p, --q) SWP(*p, *q);
}
void strrev_utf...
What is the difference between a cer, pvk, and pfx file?
...e-64 is basically just a string of "A-Za-z0-9+/" used to represent 0-63, 6 bits of binary at a time, in sequence, sometimes with 1 or 2 "=" characters at the very end when there are leftovers ("=" being "filler/junk/ignore/throw away" characters)
the header and footer is something like "-----BEGIN C...
How can I use functional programming in the real world? [closed]
...
Since you mention Win32 and DLLs, I presume you're working with unmanaged code. In that case, GHC will work very well for you. Late last year I wrote a DDE server under Windows using FFI to talk to the MS DDE libraries, and, surprisingly, it w...
invalid byte sequence for encoding “UTF8”
...hat will work on Macs in the terminal, too.) Not sure how to do that under Windows.
If you use that same utility on a file that came from Windows systems (that is, a file that's not encoded in UTF8), it will probably show something like this:
$ file yourfilename
yourfilename: ASCII text, with CRLF...
How to create a new object instance from a Type
...objectType);
The Activator class has a generic variant that makes this a bit easier:
ObjectType instance = Activator.CreateInstance<ObjectType>();
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Printing hexadecimal characters in C
... promote all integers smaller than int to int. Since char is an integer (8-bit signed integer in your case), your chars are being promoted to int via sign-extension.
Since c0 and 80 have a leading 1-bit (and are negative as an 8-bit integer), they are being sign-extended while the others in your sa...