大约有 42,000 项符合查询结果（耗时：0.0382秒） [XML]
Convert a series of parent-child relationships into a hierarchical tree?
...that array into a hierarchical tree structure:
function parseTree($tree, $root = null) {
$return = array();
# Traverse the tree and search for direct children of the root
foreach($tree as $child => $parent) {
# A direct child is found
if($parent == $root) {
...
How to avoid “Permission denied” when using pip with virtualenv
...
Solution:
If you created the virtualenv as root, run the following command:
sudo chown -R your_username:your_username path/to/virtuaelenv/
This will probably fix your problem.
Cheers
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Laravel - Eloquent or Fluent random row
...vel 3:
User::order_by(DB::raw('RAND()'))->get();
Check this article on MySQL random rows. Laravel 5.2 supports this, for older version, there is no better solution then using RAW Queries.
edit 1: As mentioned by Double Gras, orderBy() doesn't allow anything else then ASC or DESC since this chang...
Configure Log4net to write to multiple files
...sage%newline" />
</layout>
</appender>
<root>
<level value="DEBUG" />
<appender-ref ref="File1Appender" />
<appender-ref ref="File2Appender" />
</root>
</log4net>
...
Open file via SSH and Sudo with Emacs
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/su: or /sudo: on remote hosts
You can also use this syntax to sudo/su to root (or of course any other user) on a remote host:
C-xC-f /ssh:you@remotehost|sudo:remotehost:/path/to/file RET
Important: be sure to specify the hostname explicitly: sudo:remotehost: rather than sudo:: (see below).
As this...
Reset AutoIncrement in SQL Server after Delete
...
If you're using MySQL, try this:
ALTER TABLE tablename AUTO_INCREMENT = 1
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绘画动画组件 · App Inventor 2 中文网
...心，否则为 球形精灵 的最高点。
Z坐标
球形精灵应如何相对于其他球形精灵和图像精灵分层，编号较高的层位于编号较低的层之前。
事件
被碰撞时(其他精灵)
事件将在两个启用的精灵（球形精灵或图像精灵）碰撞...
Unable to import a module that is definitely installed
... my case, it is permission problem. The package was somehow installed with root rw permission only, other user just cannot rw to it!
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Is there common street addresses database design for all addresses of the world? [closed]
... lots of fields if you really want to be generic.
The UPU Universal Postal Union provides address data for lots of countries in a standard format. Note that the UPU format holds all addresses (down to the available field precision) for a whole country, it is therefore relational. If storing customer...
Best way to structure a tkinter application? [closed]
... <create the rest of your GUI here>
if __name__ == "__main__":
root = tk.Tk()
MainApplication(root).pack(side="top", fill="both", expand=True)
root.mainloop()
The important things to notice are:
I don't use a wildcard import. I import the package as "tk", which requires that ...