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Memory footprint of Haskell data types
...ires space for the list cells, unless you use Chars > 255.
An Int8 has identical representation to Int. Integer is defined like this:
data Integer
= S# Int# -- small integers
| J# Int# ByteArray# -- large integers
so a small Integer (S#) takes 2...
Why does this go into an infinite loop?
...lows you to pass int parameters by reference with the ref keyword. I've decided to update it with actual legal Java code using the first MutableInt class I found on Google to sort of approximate what ref does in C#. I can't really tell if that helps or hurts the answer. I will say that I personally ...
Is it considered bad practice to perform HTTP POST without entity body?
... /uri without a body to trigger the process. I want to know if this is considered bad from both HTTP and REST perspectives?
...
How big should a UIBarButtonItem image be?
...
As of iOS 11, the Human Interface Guidelines suggest glyphs be about 25×25 points in toolbars and navigation bars, up to a maximum of about 28 points. (And the HIG should definitely be in your bookmarks if you're working on iOS apps!)
That would translate to ...
How to get the current time in milliseconds from C in Linux?
...include <math.h>
#include <stdio.h>
#include <time.h>
void print_current_time_with_ms (void)
{
long ms; // Milliseconds
time_t s; // Seconds
struct timespec spec;
clock_gettime(CLOCK_REALTIME, &spec);
s = spec.tv_sec;
ms = round(...
RVM is not working in ZSH
...swered Jan 21 '11 at 5:24
intellidiotintellidiot
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Why does PostgreSQL perform sequential scan on indexed column?
... for other DBMS as well - some optimizations as "index only scans" taken aside (but for a SELECT * it's highly unlikely such a DBMS would go for an "index only scan")
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getenv() vs. $_ENV in PHP
...m GetEnvironmentVariableA.
If on non-Windows, from the getenv function provided by libc.
As far as I can tell, the only time when it will behave in a case-insensitive manner is on Windows because that's how the Windows environment variable API behaves. If you're on Linux, BSD, Mac, etc then getenv...
How to display hidden characters by default (ZERO WIDTH SPACE ie. ​)
I just lost part of my weekend because of this ... joker - zero width space. I just used some snippets from google groups and didn't recognize that there are doubled characters, because Idea (11) didn't show them, which was causing problems with parsing config file of my app... I discovered it accid...
DESTDIR and PREFIX of make
...
In case the ./configure file is not provided, one can still install to user-specific directory using: make prefix=/path/to/your/lib/libaio install
– Good Will
Dec 30 '18 at 22:24
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