大约有 40,000 项符合查询结果（耗时：0.0418秒） [XML]
Postgres: “ERROR: cached plan must not change result type”
...
I got the same problem on Postgres 10 while running JUnit tests for spring+jpa application. Exception message: org.postgresql.util.PSQLException: ERROR: cached plan must not change result type. And all tests work like a charm, but only Repository.findById(). I don't change the schem...
Facebook API “This app is in development mode”
...
Development mode is for testing
Go to https://developers.facebook.com/apps, then App Review -> Select No for Your app is in development and unavailable to the public
Go to Roles -> Testers, enter the Facebook user Id of the users you want to e...
Clearing coverage highlighting in Eclipse
... in green, red and yellow depending on which lines of code were covered by tests.
10 Answers
...
RSpec: describe, context, feature, scenario?
...the only difference is how your spec file reads. There is no difference in test output for example. The RSpec book says:
"We tend to use describe() for things and context() for context".
Personally I like to use describe, but I can see why people prefer context.
feature and scenario are a par...
Is a LINQ statement faster than a 'foreach' loop?
...
I was interested in this question, so I did a test just now. Using .NET Framework 4.5.2 on an Intel(R) Core(TM) i3-2328M CPU @ 2.20GHz, 2200 Mhz, 2 Core(s) with 8GB ram running Microsoft Windows 7 Ultimate.
It looks like LINQ might be faster than for each loop. Here are...
sql query to return differences between two tables
... xml, @Data2 xml
select @Data1 =
(
select *
from (select * from Test1 except select * from Test2) as a
for xml raw('Data')
)
select @Data2 =
(
select *
from (select * from Test2 except select * from Test1) as a
for xml raw('Data')
)
;with CTE1 as (
select
T...
How to get an enum value from a string value in Java?
...
@treesAreEverywhere More specifically, those methods are generated (or synthesized) by the compiler. The actual enum Blah {...} definition shouldn't try to declare its own values nor valuesOf. It's like how you can write "AnyTypeName.class" even though you...
How to get the anchor from the URL using jQuery?
...xOf() and .substring(), like this:
var url = "www.aaa.com/task1/1.3.html#a_1";
var hash = url.substring(url.indexOf("#")+1);
You can give it a try here, if it may not have a # in it, do an if(url.indexOf("#") != -1) check like this:
var url = "www.aaa.com/task1/1.3.html#a_1", idx = url.indexOf("...
How do you use “git --bare init” repository?
...give bare repositories the extension .git. So you can do
git init --bare test_repo.git
For Git versions < 1.8 you would do
mkdir test_repo.git
cd test_repo.git
git --bare init
To answer your later questions, bare repositories (by definition) don't have a working tree attached to them, so y...
Asynchronous Process inside a javascript for loop [duplicate]
...
The for loop runs immediately to completion while all your asynchronous operations are started. When they complete some time in the future and call their callbacks, the value of your loop index variable i will be at its last value for all the callbacks.
This is because t...