大约有 47,000 项符合查询结果（耗时：0.0490秒） [XML]
Setting Django up to use MySQL
I want to move away from PHP a little and learn Python. In order to do web development with Python I'll need a framework to help with templating and other things.
...
How can I set the default timezone in node.js?
... TZ environment variable before calling any date functions. Just tested it and it works.
> process.env.TZ = 'Europe/Amsterdam'
'Europe/Amsterdam'
> d = new Date()
Sat, 24 Mar 2012 05:50:39 GMT
> d.toLocaleTimeString()
'06:50:39'
> ""+d
'Sat Mar 24 2012 06:50:39 GMT+0100 (CET)'
You ca...
updating table rows in postgres using subquery
...ery.customer,
address=subquery.address,
partn=subquery.partn
FROM (SELECT address_id, customer, address, partn
FROM /* big hairy SQL */ ...) AS subquery
WHERE dummy.address_id=subquery.address_id;
This syntax is not standard SQL, but it is much more convenient for this type of query...
PostgreSQL: Show tables in PostgreSQL
...a:
\dt
Programmatically (or from the psql interface too, of course):
SELECT * FROM pg_catalog.pg_tables;
The system tables live in the pg_catalog database.
share
|
improve this answer
...
Is there a better way to express nested namespaces in C++ within the header
...A_HELPER_EXPAND(VA_COUNT_HELPER(__VA_ARGS__, 6, 5, 4, 3, 2, 1))
#define VA_SELECT_CAT(_Name, _Count, ...) VA_HELPER_EXPAND(_Name##_Count(__VA_ARGS__))
#define VA_SELECT_HELPER(_Name, _Count, ...) VA_SELECT_CAT(_Name, _Count, __VA_ARGS__)
#define VA_SELECT(_Name, ...) VA_SE...
How to represent multiple conditions in a shell if statement?
...ral. Strictly, the parentheses aren't needed because the precedence of -a and -o makes it correct even without them.
Note that the -a and -o operators are part of the POSIX specification for test, aka [, mainly for backwards compatibility (since they were a part of test in 7th Edition UNIX, for ex...
Sql query to insert datetime in SQL Server
...clare @LangID smallint
declare @Alias sysname
declare @MaxLangID smallint
select @MaxLangID = max(langid) from sys.syslanguages
set @LangID = 0
while @LangID <= @MaxLangID
begin
select @Alias = alias
from sys.syslanguages
where langid = @LangID
if @Alias is not null
begin...
WARNING: UNPROTECTED PRIVATE KEY FILE! when trying to SSH into Amazon EC2 Instance
I'm working to set up Panda on an Amazon EC2 instance.
I set up my account and tools last night and had no problem using SSH to interact with my own personal instance, but right now I'm not being allowed permission into Panda's EC2 instance.
Getting Started with Panda
...
How to select first parent DIV using jQuery?
...
Use .closest() to traverse up the DOM tree up to the specified selector.
var classes = $(this).parent().closest('div').attr('class').split(' '); // this gets the parent classes.
share
|
...
How do you change the size of figures drawn with matplotlib?
...figsize=(8, 6), ...) to change it's size etc. If you're using pyplot/pylab and show() to create a popup window, you need to call figure(num=1,...) before you plot anything - pyplot/pylab creates a figure as soon as you draw something, and the size of the popup appears to be fixed at this point.
...