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warning: implicit declaration of function
... "21"); /* The compiler has not seen the declaration. */
return 0;
}
int fun(int x, char *p)
{
/* ... */
}
You need to declare your function before main, like this, either directly or in a header:
int fun(int x, char *p);
...
Getting one value from a tuple
...
207
You can write
i = 5 + tup()[0]
Tuples can be indexed just like lists.
The main difference b...
delete_all vs destroy_all?
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80
It should also be noted that 1) Callbacks are not called when using delete_all, and 2) destroy_all instantiates all the records and destroys...
MySQL remove all whitespaces from the entire column
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203
To replace all spaces :
UPDATE `table` SET `col_name` = REPLACE(`col_name`, ' ', '')
To remo...
How to get thread id from a thread pool?
...
answered Jul 20 '10 at 20:59
skaffmanskaffman
374k9292 gold badges779779 silver badges744744 bronze badges
...
Printf width specifier to maintain precision of floating-point value
...n:
#include <float.h>
int Digs = DECIMAL_DIG;
double OneSeventh = 1.0/7.0;
printf("%.*e\n", Digs, OneSeventh);
// 1.428571428571428492127e-01
But let's dig deeper ...
Mathematically, the answer is "0.142857 142857 142857 ...", but we are using finite precision floating point numbers.
Let...
How can I test that a value is “greater than or equal to” in Jasmine?
I want to confirm that a value is a decimal (or 0), so the number should be greater than or equal to zero and less than 1.
...
How do I determine which iOS SDK I have?
...uild -showsdks
it gives something like this:
$> OS X SDKs:
OS X 10.8 -sdk macosx10.8
OS X 10.9 -sdk macosx10.9
iOS SDKs:
iOS 6.1 -sdk iphoneos6.1
iOS 7.0 -sdk iphoneos7.0
iOS Simulator...
How to force IntelliJ IDEA to reload dependencies from build.sbt after they changed?
...t)
– Kaushik Acharya
Nov 16 '16 at 10:46
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Wait for a process to finish
...
+50
To wait for any process to finish
Linux:
tail --pid=$pid -f /dev/null
Darwin (requires that $pid has open files):
lsof -p $pid +r...