大约有 40,000 项符合查询结果（耗时：0.0327秒） [XML]
How can I specify a local gem in my Gemfile?
...
In order to use local gem repository in a Rails project, follow the steps below:
Check if your gem folder is a git repository (the command is executed in the gem folder)
git rev-parse --is-inside-work-tree
Getting repository...
Shell command to tar directory excluding certain files/folders
...
The ordering of parameters seems to matter and this form works for me.
– cstamas
Oct 1 '18 at 12:33
1
...
Clicking the back button twice to exit an activity
...urn;
}
else { Toast.makeText(getBaseContext(), "Tap back button in order to exit", Toast.LENGTH_SHORT).show(); }
mBackPressed = System.currentTimeMillis();
}
Back on accepted answer critique; Using a flag to indicate if it was pressed in last TIME_INTERVAL (say 2000) milliseconds an...
How to set iPhone UIView z index?
...
UIView siblings are stacked in the order in which they are added to their superview. The UIView hierarchy methods and properties are there to manage view order. In UIView.h:
@property(nonatomic,readonly) UIView *superview;
@property(nonatomic,readonly,copy) N...
How to combine multiple conditions to subset a data-frame using “OR”?
... I intended, since ...
> NA & 1
[1] NA
> 0 & NA
[1] FALSE
Order of arguments may matter when using '&".
share
|
improve this answer
|
follow
...
Increasing (or decreasing) the memory available to R processes
...lled and
subsequently install more RAM, you may
have to reinstall R in order to take
advantage of the additional capacity.
You may also set the amount of
available memory manually. Close R,
then right-click on your R program
icon (the icon on your desktop or in
your programs dire...
MySQL pagination without double-querying?
... problem with this: There is a bug in MySQL that this tickles that affects ORDER BY queries making it much slower on large tables than the naive approach of two queries.
share
|
improve this answer
...
Laravel orderBy on a relationship
...p
public function comments()
{
return $this->hasMany('Comment')->orderBy('column');
}
[edit after comment]
<?php
class User
{
public function comments()
{
return $this->hasMany('Comment');
}
}
class Controller
{
public function index()
{
$colum...
What is `related_name` used for in Django?
...his data
you only can use related name
bom = material.tomaterial.all().order_by('-creation_time')
It is not working otherwise (at least I was not able to skip the usage of related name in case of 2 FK's to the same table.)
...
Why can't enum's constructor access static fields?
... (including those representing the enum values) are initialized in textual order, and the enum values always come before the other fields. Note that in your class example you haven't shown where ABBREV_MAP is initialized - if it's after SUNDAY, you'll get an exception when the class is initialized.
...