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Purpose of Unions in C and C++
...by using the same memory region for storing different objects at different times. That's it.
It is like a room in a hotel. Different people live in it for non-overlapping periods of time. These people never meet, and generally don't know anything about each other. By properly managing the time-shar...
Determine the line of code that causes a segmentation fault?
...compilers come with the handy -fsanitize=address flag, adding some compile time and run time overhead which does more error checking.
According to the documentation these checks include catching segmentation faults by default. The advantage here is that you get a stack trace similar to gdb's output...
use Winmerge inside of Git to file diff
...hem sequentially, forcing you to close the diff tool windows one file at a time.
Update June 2012 (2-and-a-half years later):
Comparing directories instead of file-by-file will be available soon:
See [ANNOUNCE] Git 1.7.11.rc1:
"git difftool" learned the "--dir-diff" option to spawn external di...
Cost of exception handlers in Python
...
Why don't you measure it using the timeit module? That way you can see whether it's relevant to your application.
OK, so I've just tried the following:
import timeit
statements=["""\
try:
b = 10/a
except ZeroDivisionError:
pass""",
"""\
if a:
b ...
How to close Android application?
...
It was not deprecated at the time that this was originally posted. Since the current AP then was 7 and the current API now is 19, there is probably another way to do this now.
– Danny Remington - OMS
May 6 '14 at 1...
How to stop a program running under Eclipse?
...
Ya. that is another way, but it takes time to reach there, unless u have that in the background. :)
– Varun
Feb 23 '11 at 16:47
11
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SSL handshake alert: unrecognized_name error since upgrade to Java 1.7.0
...erty, but it won't have any effect on the SNI status. To disable SNI on runtime (with the aforementioned limitations), use:
System.setProperty("jsse.enableSNIExtension", "false");
The disadvantage of setting this flag is that SNI is disabled everywhere in the application. In order to make use of ...
How do you convert a byte array to a hexadecimal string, and vice versa?
...own performance dramatically, I would tend to ignore this and trust the Runtime and the GC to take care of it.
– Tomalak
Mar 6 '09 at 17:11
89
...
How to modify a global variable within a function in bash?
...r prone to always repeate in the correct context. What if you use it 1000 times in a script and then add a variable? You definitively do not want to alter all the 1000 locations where a call to d is involved.
So leave the x away, so we can write:
_passback() { while [ 0 -lt $# ]; do printf '%q=%...
Least common multiple for 3 or more numbers
...ntegral a => [a] -> a
lcm (n:ns) = foldr lcm' n ns
I even took the time to write my own gcd function, only to find it in Prelude! Lots of learning for me today :D
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