大约有 15,500 项符合查询结果（耗时：0.0343秒） [XML]
Linq to EntityFramework DateTime
...tement into memory and then use LINQ to Objects to finish filtering:
Context.Article.Where(p => p.StartDate < DateTime.Now)
.ToList()
.Where(p => p.StartDate.AddDays(p.Period) > DateTime.Now);
You could also try the EntityFunctions.AddDays method if you'r...
PostgreSQL Crosstab Query
Does any one know how to create crosstab queries in PostgreSQL?
For example I have the following table:
6 Answers
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What are the differences between various threading synchronization options in C#?
Can someone explain the difference between:
7 Answers
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How to navigate through the source code by parts in CamelCase (instead of whole words)?
...Appearance & Behavior | Keymap | Editor Actions. This image shows an example where I access the previous behavior by adding ctrl:
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sqlalchemy flush() and get inserted id?
... of sqlalchemy .6+, there is a very simple solution (I don't know if this exists in prior version, though I imagine it does):
session.refresh()
So, your code would look something like this:
f = Foo(bar=x)
session.add(f)
session.flush()
# At this point, the object f has been pushed to the DB,
# a...
Capturing Groups From a Grep RegEx
I've got this little script in sh (Mac OSX 10.6) to look through an array of files. Google has stopped being helpful at this point:
...
Single huge .css file vs. multiple smaller specific .css files? [closed]
...and maintain. Highly, highly recommended. I personally use Sass (SCSS syntax) now, but used LESS previously. Both are great, with similar benefits. Once you've written CSS with a compiler, it's unlikely you'd want to do without one.
http://lesscss.org
http://sass-lang.com
If you don't want to mes...
How to prune local tracking branches that do not exist on remote anymore
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How can I check for “undefined” in JavaScript? [duplicate]
... value, then using the in operator is the safest way to go. Consider this example:
// global scope
var theFu; // theFu has been declared, but its value is undefined
typeof theFu; // "undefined"
But this may not be the intended result for some cases, since the variable or property was declared but...
Filtering a list based on a list of booleans
...]
>>> list(compress(list_a, fil))
[1, 4]
Timing comparisons(py3.x):
>>> list_a = [1, 2, 4, 6]
>>> fil = [True, False, True, False]
>>> %timeit list(compress(list_a, fil))
100000 loops, best of 3: 2.58 us per loop
>>> %timeit [i for (i, v) in zip(list_a...