大约有 44,900 项符合查询结果（耗时：0.0803秒） [XML]
What happens if I define a 0-size array in C/C++?
...
An array cannot have zero size.
ISO 9899:2011 6.7.6.2:
If the expression is a constant expression, it shall have a value greater than zero.
The above text is true both for a plain array (paragraph 1). For a VLA (variable length array), the behavior is undefine...
Can I export a variable to the environment from a bash script without sourcing it?
...ble, print commands that will set the environment variable:
$ cat set-vars2.sh
#!/bin/bash
echo export FOO=BAR
$ eval "$(./set-vars2.sh)"
$ echo "$FOO"
BAR
A third approach is to have a script that sets your environment variable(s) internally and then invokes a specified command with that environ...
In Java, what is the best way to determine the size of an object?
...
26 Answers
26
Active
...
How well is Unicode supported in C++11?
...
267
How well does the C++ standard library support unicode?
Terribly.
A quick scan through t...
Loop through each row of a range in Excel
...
Rachel Hettinger
6,18922 gold badges1818 silver badges2727 bronze badges
answered Sep 23 '09 at 0:19
MikeMike
...
{version} wildcard in MVC4 Bundle
...
|
edited Oct 23 '16 at 7:48
Tomas Kubes
18.7k1414 gold badges8585 silver badges122122 bronze badges
...
Efficiently test if a port is open on Linux?
...>&6
cat <&6
I'm using 6 as the file descriptor because 0,1,2 are stdin, stdout, and stderr. 5 is sometimes used by Bash for child processes, so 3,4,6,7,8, and 9 should be safe.
As per the comment below, to test for listening on a local server in a script:
exec 6<>/dev/tcp/127...
Colorize logs in eclipse console
...d via the Eclipse Marketplace again without changing any options.
[Update 2]:
As pointed out by @azdev, to get proper highlighting:
Entering just literal strings doesn't work. To get a line to be colored, you have to enclose the string in
.*
on either side, like so:
.*ERROR.*
...
Which is better in python, del or delattr?
...
272
The first is more efficient than the second. del foo.bar compiles to two bytecode instruction...
How to format a floating number to fixed width in Python
...
525
for x in numbers:
print "{:10.4f}".format(x)
prints
23.2300
0.1233
1.0000
...