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Compare floats in php
...ause it looks small, this comparison will return true in alot of precision errors when the numbers are small. A correct way would be to check if the relative error is smaller than the epsilon. abs($a-$b) > abs(($a-$b)/$b)
– Piet Bijl
Jun 21 '13 at 13:18
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How to drive C#, C++ or Java compiler to compute 1+2+3+…+1000 at compile time?
...(){
sum_from<1>::to<1000>::result();
}
Output for GCC:
error: declaration of ‘struct sum_from<1u>::to<1000u>::equals<500500u>’
Live example on Ideone.
Output for MSVC10:
error C2514: 'sum_from<Start>::to<Goal>::equals<Result>' : class h...
Re-raise exception with a different type and message, preserving existing information
...hierarchy for the exceptions that it can raise (e.g. inheriting from a FooError abstract class for all the foo module's specific exceptions). This allows users of the module to catch those particular exceptions and handle them distinctly, if needed. But many of the exceptions raised from the mod...
How do I unlock a SQLite database?
...qlite3: sqlite> .dump PRAGMA foreign_keys=OFF; BEGIN TRANSACTION; /**** ERROR: (5) database is locked *****/ ROLLBACK; -- due to errors
– woky
Nov 28 '14 at 22:40
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WCF timeout exception detailed investigation
...quired but that all the other elements needed to be in place to ensure the error did not happen. Thanks very much!
– Jason Kealey
Apr 6 '11 at 2:04
2
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What is the difference between self-types and trait subclasses?
... extends Tweeter {
| def noCanDo = name
| }
<console>:9: error: illegal inheritance;
self-type Wrong does not conform to Tweeter's selftype Tweeter with User
trait Wrong extends Tweeter {
^
<console>:10: error: not found: value name
...
PHP cURL custom headers
... $season_data = curl_exec($ch);
if (curl_errno($ch)) {
print "Error: " . curl_error($ch);
exit();
}
// Show me the result
curl_close($ch);
$json= json_decode($season_data, true);
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Why does the MongoDB Java driver use a random number generator in a conditional?
...the test:
if( !ok && (logit = (logit + 1 ) % 10) == 0 ) { //log error
This always logs the first error, then every tenth subsequent error. Logical operators "short-circuit", so logit only gets incremented on an actual error.
If you want the first and tenth of all errors, regardless of ...
Evaluate expression given as a string
...l(parse(text="gray")))
[1] "function"
> class(eval(parse(text="blue")))
Error in eval(expr, envir, enclos) : object 'blue' not found
See also tryCatch.
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nginx - nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
All of a sudden I am getting the below nginx error
17 Answers
17
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