大约有 47,000 项符合查询结果（耗时：0.0818秒） [XML]
The 3 different equals
What is the difference between = , == , and === ?
5 Answers
5
...
Do SVG docs support custom data- attributes?
...SVG provides an alternative mechanism for data-*. SVG allows any attribute and tag to be included, as long as it doesn't conflict with existing ones (in other words: you should use namespaces).
To use this (equivalent) mechanism:
use mydata:id instead of data-myid, like this: <p mydata:id="12...
How to force ASP.NET Web API to always return JSON?
...
where does the first part of the code get cut and pasted too? I don't see a "config" object in my Global.asax. Where is that variable coming from? the article doesn't explain either.
– BuddyJoe
Aug 13 '13 at 23:38
...
How can I calculate the number of lines changed between two commits in git?
...rather than specifying commit ranges, just select commits since last week) and --no-merges (merge commits don't actually introduce changes), as well as the pretty output options (--pretty=oneline, short, medium, full...).
Here's a one-liner to get total changes instead of per-commit changes from gi...
How to scroll up or down the page to an anchor using jQuery?
...
Description
You can do this using jQuery.offset() and jQuery.animate().
Check out the jsFiddle Demonstration.
Sample
function scrollToAnchor(aid){
var aTag = $("a[name='"+ aid +"']");
$('html,body').animate({scrollTop: aTag.offset().top},'slow');
}
scrollToAncho...
Bomb dropping algorithm
... simple sub-problem.
There are 2 parts to the explanation, the algorithm, and the reason the algorithm
provides an optimal solution. The first won't make sense without the second, so I'll
start with the why.
If you think of bombing the rectangle (assume a big rectangle - no edge cases yet)
you...
Prevent dialog dismissal on screen rotation in Android
...
Create a new class which extends DialogFragment. Override onCreateDialog and return your old Dialog or an AlertDialog.
Then you can show it with DialogFragment.show(fragmentManager, tag).
Here's an example with a Listener:
public class MyDialogFragment extends DialogFragment {
public inter...
Mvn install or Mvn package
...ing-started/maven-in-five-minutes.html
package: take the compiled code and package it in its distributable
format, such as a JAR.
install: install the package into the local repository, for use as a
dependency in other projects locally
So the answer to your question is, it depends on ...
Fast check for NaN in NumPy
... to get slower as NaNs get closer to the start of the array. On the other hand, sum's throughput seems constant regardless of whether there are NaNs and where they're located:
In [40]: x = np.random.rand(100000)
In [41]: %timeit np.isnan(np.min(x))
10000 loops, best of 3: 153 us per loop
In [42]:...
Right way to reverse pandas.DataFrame?
...ich returns 6. Then it tries to call data[j - 1] for j in range(6, 0, -1), and the first call would be data[5]; but in pandas dataframe data[5] means column 5, and there is no column 5 so it will throw an exception. ( see docs )
...