大约有 20,000 项符合查询结果（耗时：0.0246秒） [XML]
ALTER TABLE, set null in not null column, PostgreSQL 9.1
I have a table with not null column, How to set a null value in this column as default?
4 Answers
...
R data formats: RData, Rda, Rds etc
...
Rda is just a short name for RData. You can just save(), load(), attach(), etc. just like you do with RData.
Rds stores a single R object. Yet, beyond that simple explanation, there are several differences from a "standard" storage....
How does TransactionScope roll back transactions?
I'm writing an integration test where I will be inserting a number of objects into a database and then checking to make sure whether my method retrieves those objects.
...
is there any way to force copy? copy without overwrite prompt, using windows?
...commands(it's a long list) where it does all these magical things for me, but whenever I use copy, it stops to ask fro overwrite prompt. When I type yes, it overwrites the old file then just stops there.
...
What is Pseudo TTY-Allocation? (SSH and Github)
I was trying to setup an SSH connection with Github following this tutorial: https://help.github.com/articles/testing-your-ssh-connection/
...
Will web browsers cache content over https
Will content requested over https still be cached by web browsers or do they consider this insecure behaviour? If this is the case is there anyway to tell them it's ok to cache?
...
New Line on PHP CLI
I have a php CLI script and cannot get the output to break on new lines. I do
4 Answers
...
Will writeToFile:atomically: overwrite data?
Really simple question but it doesn't seem to be clear in Apple's docs.
2 Answers
2
...
generating GUID without hyphen
I am generating a GUID using the following statement in my code
2 Answers
2
...
how to set a value for a span using JQuery
How to set a value for a span using JQuery..
5 Answers
5
...