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error: ‘NULL’ was not declared in this scope
I get this message when compiling C++ on gcc 4.3
6 Answers
6
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Why not use exceptions as regular flow of control?
...question is: "by type", e.g., I'll tell my debugger to catch only AssertionError or StandardError or something that does correspond to bad things happening. If you have trouble with that, then how do you do logging -- don't you log by level and class, precisely so you can filter on them? Do you th...
“Inner exception” (with traceback) in Python?
... raise.
import sys
class MyException(Exception): pass
try:
raise TypeError("test")
except TypeError, e:
raise MyException(), None, sys.exc_info()[2]
Always do this when catching one exception and re-raising another.
...
“git diff” does nothing
I presume this is a configuration error somewhere, but I can't figure out where. Regular git commands appear to work fine, but "git diff" does nothing. To be safe, I removed external diff tools from my .gitconfig file. This was installed via MacPorts and is the lates version (1.7.2.2).
...
How do I parse a string into a number with Dart?
...et 172. In JavaScript parseInt("-01:00") works just fine but Dart gives an error. Is there any easy way without checking manually character-by-character? Thanks.
– user1596274
Aug 18 at 14:29
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Python executable not finding libpython shared library
...tOS 7 minimal. It all worked fine on its own, but I saw the shared library error mentioned in this question when I tried running a simple CGI script:
tail /var/log/httpd/error_log
AH01215: /opt/rh/rh-python35/root/usr/bin/python: error while loading shared libraries: libpython3.5m.so.rh-python35-1....
How to use phpexcel to read data and insert into database?
...el = $objReader->load($inputFileName);
} catch(Exception $e) {
die('Error loading file "'.pathinfo($inputFileName,PATHINFO_BASENAME).'": '.$e->getMessage());
}
// Get worksheet dimensions
$sheet = $objPHPExcel->getSheet(0);
$highestRow = $sheet->getHighestRow();
$highestColumn = ...
Check if a Windows service exists and delete in PowerShell
...f you just want to check service existence:
if (Get-Service "My Service" -ErrorAction SilentlyContinue)
{
"service exists"
}
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Deny all, allow only one IP through htaccess
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This can be improved by using the directive designed for that task.
ErrorDocument 403 /specific_page.html
Order Allow,Deny
Allow from 111.222.333.444
Where 111.222.333.444 is your static IP address.
When using the "Order Allow,Deny" directive the requests must match either Allow or Deny, i...
Making the iPhone vibrate
...and the kSystemSoundID_Vibrate is a regular Int. The compiler gives you an error for trying to cast from Int to UInt32, but the error reads as "Cannot convert to SystemSoundID", which is confusing. Why didn't apple just make it a Swift enum is beyond me.
@aponomarenko's goes into the details, my ans...