大约有 15,000 项符合查询结果（耗时：0.0286秒） [XML]
Apply function to all elements of collection through LINQ [duplicate]
...source)
{
action(element);
}
}
(Where ThrowIfNull is an extension method on any reference type, which does the obvious thing.)
It'll be interesting to see if this is part of .NET 4.0. It goes against the functional style of LINQ, but there's no doubt that a lot of people find it u...
How to get the title of HTML page with JavaScript?
...ment, but as the code snippet shows, it does not do that. It returns the text that is inside the HTML title element. That's a pretty big difference.
– zumafra
Jul 31 at 15:40
...
List goals/targets in GNU make that contain variables in their definition
...that gnu make can be convinced to spit out a list of targets after it has expanded these variables?
16 Answers
...
C++11 emplace_back on vector?
..., ...) it will be considered as regular T{arg0, arg1, ...} that you would expect.
share
|
improve this answer
|
follow
|
...
SQL Joins Vs SQL Subqueries (Performance)?
...
I would EXPECT the first query to be quicker, mainly because you have an equivalence and an explicit JOIN. In my experience IN is a very slow operator, since SQL normally evaluates it as a series of WHERE clauses separated by "OR" (W...
Making heatmap from pandas DataFrame
...y as np
from pandas import DataFrame
import matplotlib.pyplot as plt
index = ['aaa', 'bbb', 'ccc', 'ddd', 'eee']
columns = ['A', 'B', 'C', 'D']
df = DataFrame(abs(np.random.randn(5, 4)), index=index, columns=columns)
plt.pcolor(df)
plt.yticks(np.arange(0.5, len(df.index), 1), df.index)
plt.xticks...
How to enter a multi-line command
... or any other kind of parentheses will allow line continuation directly:
$x=1..5
$x[
0,3
] | % {
"Number: $_"
}
Similar to the | a comma will also work in some contexts:
1,
2
Keep in mind, though, similar to JavaScript's Automatic Semicolon Insertion, there are some things that are similar...
ISO time (ISO 8601) in Python
...
Here is what I use to convert to the XSD datetime format:
from datetime import datetime
datetime.now().replace(microsecond=0).isoformat()
# You get your ISO string
I came across this question when looking for the XSD date time format (xs:dateTime). I needed t...
Reducing MongoDB database file size
... was once large (>3GB). Since then, documents have been deleted and I was expecting the size of the database files to decrease accordingly.
...
Center Oversized Image in Div
...est of the styling used
}
.child {
position: absolute;
top: -9999px;
bottom: -9999px;
left: -9999px;
right: -9999px;
margin: auto;
}
share
|
improve this answer
|...