大约有 47,000 项符合查询结果（耗时：0.0402秒） [XML]
Converting an array of objects to ActiveRecord::Relation
...e clause will generate a SQL statement with IN that looks something like:
SELECT .... WHERE `my_models`.id IN (2, 3, 4, 6, ....
Keep in mind that the ordering of the array will be lost - But since your objective is only to run a class method on the collection of these objects, I assume it won't b...
How do I install a NuGet package .nupkg file locally?
...r NuGet package files in that folder.
Go to your Project, right click and select "Manage NuGet Packages" and select your new package source.
Here is the documentation.
share
|
improve this answe...
Adding Core Data to existing iPhone project
... files in the right pane (like in a Resources folder for safe keeping) and select to Add a New File, Click the Core Data tab when selecting your file type then Click 'Data Model', give it a name and click Next and Finish and it will add it to your project. When you click on this Model object you wil...
Difference between / and /* in servlet mapping url pattern
...tial difference between /* and / is that a servlet with mapping /* will be selected before any servlet with an extension mapping (like *.html), while a servlet with mapping / will be selected only after extension mappings are considered (and will be used for any request which doesn't match anything ...
Apply multiple functions to multiple groupby columns
... group. When aggregating, g will be a Series. Passing g.index to df.ix[] selects the current group from df. I then test if column C is less than 0.5. The returned boolean series is passed to g[] which selects only those rows meeting the criteria.
In [95]: cust = lambda g: g[df.loc[g.index]['C']...
How do I import CSV file into a MySQL table?
...
You have to select a table before you can continue... and since the whole point is not having to make the table...
– Dominique
Nov 4 '14 at 20:06
...
Setting up FTP on Amazon Cloud Server [closed]
...TP ports on your EC2 server. Log in to the AWS EC2 Management Console and select Security Groups from the navigation tree on the left. Select the security group assigned to your EC2 instance. Then select the Inbound tab, then click Edit:
Add two Custom TCP Rules with port ranges 20-21 and 1024...
Automating the InvokeRequired code pattern
...
Create a ThreadSafeInvoke.snippet file, and then you can just select the update statements, right click and select 'Surround With...' or Ctrl-K+S:
<?xml version="1.0" encoding="utf-8" ?>
<CodeSnippet Format="1.0.0" xmlns="http://schemas.microsoft.com/VisualStudio/2005/CodeSnip...
What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?
...ction is not used to get an identity, it's used to create an identity in a select...into query.
The session is the database connection. The scope is the current query or the current stored procedure.
A situation where the scope_identity() and the @@identity functions differ, is if you have a trig...
Emacs bulk indent for Python
...
I use the following snippet. On tab when the selection is inactive, it indents the current line (as it normally does); when the selection is inactive, it indents the whole region to the right.
(defun my-python-tab-command (&optional _)
"If the region is active, s...