大约有 16,380 项符合查询结果（耗时：0.0410秒） [XML]
Change values while iterating
...t is not possible.
The reason for this is that range copies the values from the slice you're iterating over.
The specification about range says:
Range expression 1st value 2nd value (if 2nd variable is present)
array or slice a [n]E, *[n]E, or []E index ...
updating table rows in postgres using subquery
Using postgres 8.4, My goal is to update existing table:
6 Answers
6
...
Linq to Entities join vs groupjoin
I have web searched but I still cant find a simple answer. Can someone please explain (in simple English) what a GroupJoin is? How is it different from a regular inner Join ? Is it commonly used? Is it only for method syntax? What about query syntax? A c# code example would be nice.
...
What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
...
From here:-
Cascading Remove
Marking a reference field with CascadeType.REMOVE (or CascadeType.ALL,
which includes REMOVE) indicates that remove operations should be
cascaded automatically to entity objects that are...
How do I execute inserts and updates in an Alembic upgrade script?
I need to alter data during an Alembic upgrade.
3 Answers
3
...
Which is generally best to use — StringComparison.OrdinalIgnoreCase or StringComparison.InvariantCul
I have some code like this:
5 Answers
5
...
How to keep Maven profiles which are activeByDefault active even if another profile gets activated?
I have a profile in my pom.xml which should be always active unless it is explicitely deactivated (-P !firstProfile).
I solved this by using the activeByDefault flag:
...
How can you diff two pipelines in Bash?
How can you diff two pipelines without using temporary files in Bash? Say you have two command pipelines:
3 Answers
...
Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
The section "Avoid Enums Where You Only Need Ints" was removed from the official developer documentation . (See Why doesn't Android use more enums? for the old section content)
...
How to get error information when HttpWebRequest.GetResponse() fails
I am initiating an HttpWebRequest and then retrieving it's response. Occasionally, I get a 500 (or at least 5##) error, but no description. I have control over both endpoints and would like the receiving end to get a little bit more information. For example, I would like to pass the exception mes...