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Is there a performance difference between i++ and ++i in C++?
...xtremely:
Flags (--std=c++0x) ++i i++
-DPACKET_SIZE=50 -O1 0.05 0.74
-DPACKET_SIZE=50 -O3 0.08 0.97
-DPACKET_SIZE=500 -O1 0.05 2.79
-DPACKET_SIZE=500 -O3 0.08 2.18
-DPACKET_SIZE=5000 -O3 0.07 21.90
Conclusion
Performance-wise
If you do not need the previo...
How can I get the MAC and the IP address of a connected client in PHP?
...
– Dheeraj Thedijje
Oct 16 '16 at 9:05
add a comment
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Application_Error not firing when customerrors = “On”
I have code in the global.asax file's Application_Error event which executes when an error occurs and emails details of the error to myself.
...
AssertContains on strings in jUnit
...rest assertion
assertThat(person.getName(), containsString("myName"));
// Error Message
java.lang.AssertionError:
Expected: a string containing "myName"
got: "some other name"
You can optional add an even more detail error message.
// Hamcrest assertion with custom error message
assertThat(...
PG::ConnectionBad - could not connect to server: Connection refused
...
#2 is a great suggestion: "Check server.log". My error was actually caused by upgrading to Yosemite, the server log said: FATAL: could not open directory "pg_tblspc": No such file or directory. This answer helped me with that problem stackoverflow.com/questions/25970132/...
How do I get indices of N maximum values in a NumPy array?
...xample.
– abroekhof
Sep 20 '12 at 9:05
49
@abroekhof Yes that should be equivalent for any list o...
How can I view all the git repositories on my machine?
...ll from Windows Powershell:
Get-ChildItem . -Attributes Directory+Hidden -ErrorAction SilentlyContinue -Include ".git" -Recurse
EDIT #1: -Filter is twice as fast as -Include. Here is that solution:
Get-ChildItem . -Attributes Directory+Hidden -ErrorAction SilentlyContinue -Filter ".git" -Recur...
Get the first key name of a javascript object [duplicate]
...
PickelsPickels
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Most efficient way to remove special characters from string
....Length)".
– David
Jul 13 '09 at 16:05
2
My answer, using a char[] buffer rather than StringBuild...
How is __eq__ handled in Python and in what order?
...P ?
– Mr_and_Mrs_D
May 30 '16 at 21:05
base on this answer and accompanied comments , this just left me more confused ...