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What is the difference between quiet NaN and signaling NaN?
...e exit status:
g++ -ggdb3 -O0 -Wall -Wextra -pthread -std=c++11 -pedantic-errors -o blow_up.out blow_up.cpp -lm -lrt
./blow_up.out
echo $?
Output:
FE_ALL_EXCEPT snan + 1.0f
feenableexcept qnan + 1.0f
Floating point exception (core dumped)
136
Note that this behaviour only happens with -O0 in G...
String formatting: % vs. .format vs. string literal
...ere %s" % name
yet, if name happens to be (1, 2, 3), it will throw a TypeError. To guarantee that it always prints, you'd need to do
"hi there %s" % (name,) # supply the single argument as a single-item tuple
which is just ugly. .format doesn't have those issues. Also in the second example yo...
How to assign the output of a command to a Makefile variable
...to the Makefile, will you get this? Probably not. You will probably get an error like what is reported here:
makefile:4: *** missing separator. Stop
Why: Because although I personally used a genuine tab, Stack Overflow (attempting to be helpful) converts my tab into a number of spaces. You, frustr...
How to concatenate strings with padding in sqlite
...
Query Error: no such function: printf Unable to execute statement select printf('%s.%s', id, url ) from mytable limit 7. My version is 3.8.2 2014-12-06. What version are you using?
– Berry Tsakala
...
Printing object properties in Powershell
...te session allowing you to see progress, and if a remote session throws an error Write-Output information is lost.
– RobG
Jan 30 '19 at 4:24
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Using socket.io in Express 4 and express-generator's /bin/www
...ided port, on all network interfaces.
*/
server.listen(port);
server.on('error', onError);
server.on('listening', onListening);
/**
* Socket.io
*/
var io = app.io;
io.listen(server);`
Additionally getting that connection to work requires implementing the client side API as well. This isn't E...
What's the best way to do a backwards loop in C/C#/C++?
... sizeof(int) , but would return sizeof(int*) . array_size causes a compile error for that case instead of silently working.
– Johannes Schaub - litb
Dec 29 '08 at 5:22
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Why NSUserDefaults failed to save NSMutableDictionary in iOS?
...iver on the NSArray got rid of the "Attempt to insert non-property value" error.
– John Wright
Jul 6 '09 at 17:21
Whe...
Regular expression to limit number of characters to 10
...ference.
Your expression had a + after the closing curly brace, hence the error.
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Regular expression to get a string between two strings in Javascript
...tions/30118815/… And the pattern works well with modern browsers without error. Try this checker instead regex101.com
– duduwe
Sep 8 '18 at 15:32
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