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Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
...s efficient, they're guaranteed to be portable, they'll pass even the strictest linters, and even new programmers will understand them.
Isn't that worth it?
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What are Makefile.am and Makefile.in?
...//www.gnu.org/software/automake/manual/html_node/Creating-amhello.html and tested on Ubuntu 14.04 Automake 1.14.1.
Makefile.am
SUBDIRS = src
dist_doc_DATA = README.md
README.md
Some doc.
configure.ac
AC_INIT([automake_hello_world], [1.0], [bug-automake@gnu.org])
AM_INIT_AUTOMAKE([-Wall -Wer...
Python: Select subset from list based on index set
...worrying about performance? Write what you have to do, if it is slow, then test to find bottlenecks.
– Gary Kerr
Jul 5 '10 at 11:39
1
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How to get the current date/time in Java [duplicate]
....now( clock ).
Instant instant = Instant.now( yourClockGoesHere ) ;
For testing purposes, note the alternate implementations of Clock available statically from Clock itself: fixed, offset, tick, and more.
About java.time
The java.time framework is built into Java 8 and later. These classes su...
Looping in a spiral
...y+dx, x+dy # jump
yield x, y
x, y = x+dx, y+dy
Testing with:
print 'Spiral 3x3:'
for a,b in spiral(3,3):
print (a,b),
print '\n\nSpiral 5x3:'
for a,b in spiral(5,3):
print (a,b),
You get:
Spiral 3x3:
(0, 0) (1, 0) (1, 1) (0, 1) (-1, 1) (-1, 0) (-1, -1) (0, -1...
With bash, how can I pipe standard error into another process?
... 1 of them receives it, then you may be in an awkward situation. Try doing testing with something like grep instead. Plus you might find that both mouse/keyboard inputs are going to the 2nd command anyway rather than to weston.
– BeowulfNode42
Jun 28 '18 at 8:4...
Why do people say that Ruby is slow? [closed]
...ardware and some patchlevels may have been different, and a few additional tests were added, but the bigger picture of things did not change.
– vladr
Mar 28 '10 at 3:34
...
What is the point of Lookup?
...em.Collections.Generic;
using System.Linq;
using System.Xml;
public class Test
{
static void Main()
{
// Just types covering some different assemblies
Type[] sampleTypes = new[] { typeof(List<>), typeof(string),
typeof(Enumerable),...
static const vs #define
...ILE__ and __LINE__ can be incorporated into the macro substitution
you can test for existence and value in #if statements for conditionally including code (more powerful than a post-preprocessing "if" as the code need not be compilable if not selected by the preprocessor), use #undef-ine, redefine e...
How do you find the row count for all your tables in Postgres
... table_schema='public'
\""
TABLENAMES=$(export PGPASSWORD=test; eval "$PGCOMMAND")
for TABLENAME in $TABLENAMES; do
PGCOMMAND=" psql -h localhost -U fred -d mydb -At -c \"
SELECT '$TABLENAME',
count(*)
FROM $TABLEN...