大约有 40,000 项符合查询结果（耗时：0.0553秒） [XML]
How do I increase the number of displayed lines of a Java stack trace dump?
...re
The causes are displayed from the most nested one at the bottom (the "root cause"), to the one which the printed stack trace belongs to.
In this case the root cause is LowLevelException, which caused MidLevelException, which caused HighLevelException.
To get the complete stack trace you have ...
What does Docker add to lxc-tools (the userspace LXC tools)?
... from any tarball with "docker import". For example: "debootstrap raring ./rootfs; tar -C ./rootfs -c . | docker import flimm/mybase".
– Solomon Hykes
Aug 20 '13 at 15:47
...
How do I append text to a file?
...
How can i do this when the file need root permission?
– UselesssCat
Jul 18 '17 at 13:52
2
...
How to find out client ID of component for ajax update/render? Cannot find component with expression
...r character (called an "absolute" search expression), the base will be the root UIComponent of the component tree. The leading separator character will be stripped off, and the remainder of the search expression will be treated as a "relative" search expression as described below.
Otherwise, if th...
Heroku Postgres - terminate hung query (idle in transaction)
...icient:
select pg_terminate_backend(1234);
If you have shell access and root or postgres permissions you can also do it from the shell. To "cancel" one can do:
kill -INT 1234
and to "terminate", simply:
kill 1234
DO NOT:
kill -9 1234
... that will often result in the the whole postgres ...
How do RVM and rbenv actually work?
...earches each parent directory for an .rbenv-version file until it hits the root of your filesystem. If one is found, its contents are used to set the RBENV_VERSION environment variable.
If RBENV_VERSION is still not set, rbenv tries to set it using the contents of the ~/.rbenv/version file.
If no ve...
How do I tell Maven to use the latest version of a dependency?
...ferences the newest
available version. For example, if
you use a corporate root POM, this
goal can be helpful if you need to
ensure you are using the latest
version of the corporate root POM.
versions:update-child-modules updates the parent section of the
child modules of a project so the
version ma...
Performance of FOR vs FOREACH in PHP
...ur time for a micro-optimization. Remember, Premature Optimization Is The Root Of All Evil...
Edit: Based upon the comment, I decided to do a quick benchmark run...
$a = array();
for ($i = 0; $i < 10000; $i++) {
$a[] = $i;
}
$start = microtime(true);
foreach ($a as $k => $v) {
$a[$...
Add … if string is too long PHP [duplicate]
I have a description field in my MySQL database, and I access the database on two different pages, one page I display the whole field, but on the other, I just want to display the first 50 characters. If the string in the description field is less than 50 characters, then it won't show ... , but if...
how to delete all commit history in github? [duplicate]
...emove all commit history, simply delete the .git directory in your project root (note that it's hidden). Then initialize a new repository in the same folder and link it to the GitHub repository:
git init
git remote add origin git@github.com:user/repo
now commit your current version of code
git a...