大约有 40,000 项符合查询结果(耗时:0.0502秒) [XML]
Surrogate vs. natural/business keys [closed]
...JECT'
and k.task_code = 'BUILD';
Unless anyone seriously thinks the following is a good idea?:
select sum(t.hours)
from timesheets t
where t.dept_id = 34394
and t.status_id = 89
and t.project_id = 1253
and t.task_id = 77;
"But" someone will say, "what happens when the code for MYPROJECT or ...
How do I get an animated gif to work in WPF?
...; Install-Package WpfAnimatedGif
and to use it, at a new namespace to the Window where you want to add the gif image and use it as below
<Window x:Class="MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
...
Proper way to handle multiple forms on one page in Django
...then if the first form has any validation errors, the second automatically wins and the first form is reset, although we still need to display the errors from the first form. Just thought you should know
– Enduriel
May 3 '13 at 16:12
...
How to manage local vs production settings in Django?
...ttings that Harper Shelby posted. Obviously depending on the environment (win/linux/etc.) the code might need to be tweaked a bit.
I was in the past using the "if DEBUG" but I found that occasionally I needed to do testing with DEUBG set to False. What I really wanted to distinguish if the enviro...
PHP: Storing 'objects' inside the $_SESSION
...hing the state into nooks and crannies amounts to some kind of theoretical win is just wrong. State is state. If you use state, you lose the various technical advantages gained by being stateless. This is not something to lose sleep over unless you know in advance that you ought to be losing slee...
Why does Python pep-8 strongly recommend spaces over tabs for indentation?
... myself to use spaces too, but editor (at least Eclipse + PyDev) wise tabs wins especially if you enable show invisible characters. And I can easily set tabs to be 4, 8, 6 spaces visually. So in my code at least I value personal preference, and stick to spaces if that is the established convention i...
What is time_t ultimately a typedef to?
.... A similar workaround exists in .Net. I pass 64-bit epoch numbers between Win and Linux systems with no problem (over a communications channel). That brings up byte-ordering issues, but that's another subject.
To answer paxdiablo's query, I'd say that it printed "19100" because the program was wri...
Python strptime() and timezones?
..., minute, second). Nothing else. No mention of timezones.
Interestingly, [Win XP SP2, Python 2.6, 2.7] passing your example to time.strptime doesn't work but if you strip off the " %Z" and the " EST" it does work. Also using "UTC" or "GMT" instead of "EST" works. "PST" and "MEZ" don't work. Puzzlin...
What does the slash mean in help() output?
...aracter.
Then his proposal won.
Heh. If that's true, my '/' proposal wins:
def foo(pos_only, /, pos_or_kw, *, kw_only): ...
I think the very relevant document covering this is PEP 570.
Where recap section looks nice.
Recap
The use case will determine which parameters to use in ...
How do I choose between Semaphore and SemaphoreSlim?
...states that the SemaphoreSlim is a lightweight alternative and doesn't use Windows Kernel semaphores. This resource states that the SemaphoreSlim is much faster. In what situations does the SemaphoreSlim make more sense over the Semaphore and vice versa?
...
