大约有 40,000 项符合查询结果（耗时：0.0509秒） [XML]
Find() vs. Where().FirstOrDefault()
...thods. Find is available only for the List<T>. Methods that are generally more applicable, are then more reusable and have a greater impact.
I guess my next question would be why did they add the find at all. That is a good tip. The only thing I can think of is that the FirstOrDefault coul...
PostgreSQL DISTINCT ON with different ORDER BY
...et is unpredictable unless ORDER BY is used to ensure that the desired row appears first. [...] The DISTINCT ON expression(s) must match the leftmost ORDER BY expression(s).
Official documentation
So you'll have to add the address_id to the order by.
Alternatively, if you're looking for the full...
Creating a copy of a database in PostgreSQL [closed]
...
Postgres allows the use of any existing database on the server as a template when creating a new database. I'm not sure whether pgAdmin gives you the option on the create database dialog but you should be able to execute the following...
Merge, update, and pull Git branches without using checkouts
I work on a project that has 2 branches, A and B. I typically work on branch A, and merge stuff from branch B. For the merging, I would typically do:
...
Show pending migrations in rails
...
This command will list all migrations with their status (UP or DOWN)
Rails 3 and 4
rake db:migrate:status
Rails 5
rake db:migrate:status
# Or
rails db:migrate:status
...
Is this the right way to clean-up Fragment back stack when leaving a deeply nested stack?
...out this depending on the intended behavior, but this link should give you all the best solutions and not surprisingly is from Dianne Hackborn
http://groups.google.com/group/android-developers/browse_thread/thread/d2a5c203dad6ec42
Essentially you have the following options
Use a name for your in...
BSS段、数据段、代码段、堆与栈 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...下其各自的.asm，发现在程序1.asm 中ar 的定义如下：
_BSS SEGMENT
?ar@@3PAHA DD 0493e0H DUP (?) ; ar
_BSS ENDS
而在程序2.asm 中，ar 被定义为：
_DATASEGMENT
?ar@@3PAHA DD 01H ; ar
DD 02H
DD 03H
ORG $+1199988
_DATAENDS
区别很明显，一个位于.bss 段...
How to determine a Python variable's type?
...
It is so simple. You do it like this.
print(type(variable_name))
share
|
improve this answer
|
follow
|
...
Remove credentials from Git
...everal repositories, but lately I was just working in our internal one and all was great.
35 Answers
...
assertEquals vs. assertEqual in python
...as been deprecated as well:
Method Name | Deprecated alias(es)
_________________________________________________________
assertEqual() | failUnlessEqual, assertEquals
From 25.3.7.1.1. Deprecated aliases
...