大约有 3,200 项符合查询结果（耗时：0.0332秒） [XML]
ListView inside ScrollView is not scrolling on Android
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I found a solution that works excellently and can scroll the ListView without problems:
ListView lv = (ListView)findViewById(R.id.myListView); // your listview inside scrollview
lv.setOnTouchListener(new ListView.OnTouchListener() {
@Override
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Apache Spark: The number of cores vs. the number of executors
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From the excellent resources available at RStudio's Sparklyr package page:
SPARK DEFINITIONS:
It may be useful to provide some simple definitions
for the Spark nomenclature:
Node: A server
Worker Node: A server that is part of the cl...
Custom events in jQuery?
...re and here. Why exactly this can be useful? I found how to use it in this excellent explanation from twitter engineer.
P.S. In plain javascript you can do this with new CustomEvent, but beware of IE and Safari problems.
sh...
iOS Image Orientation has Strange Behavior
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Quick copy/paste Swift translation of Dilip's excellent answer.
import Darwin
class func rotateCameraImageToProperOrientation(imageSource : UIImage, maxResolution : CGFloat) -> UIImage {
let imgRef = imageSource.CGImage;
let width = CGFloat(CGImageGetWidth...
Button Click event fires when pressing Enter key in different input (no forms)
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Excellent fix. I thought browsers would only auto-submit on "Enter" when inside <form> tags. But I see I was wrong.
– Clayton Bell
Jul 3 '13 at 16:38
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raw vs. html_safe vs. h to unescape html
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The difference is between Rails’ html_safe() and raw(). There is an excellent post by Yehuda Katz on this, and it really boils down to this:
def raw(stringish)
stringish.to_s.html_safe
end
Yes, raw() is a wrapper around html_safe() that forces the input to String and then calls html_sa...
Vagrant reverse port forwarding?
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Excellent! ifconfig and ip address weren't getting me what I needed, but netstat -rn did.
– geerlingguy
Jan 14 '19 at 16:59
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Why does Convert.ToString(null) return a different value if you cast null?
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Following on from JaredPar's excellent overload resolution answer - the question remains "why does Convert.ToString(string) return null, but Convert.ToString(object) return string.Empty"?
And the answer to that is...because the docs say so:
Convert.ToSt...
How can I upload files asynchronously?
...pRequest (Ajax). You can simulate the effect using an iframe or Flash. The excellent jQuery Form Plugin that posts your files through an iframe to get the effect.
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What does numpy.random.seed(0) do?
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@Jonathan Excellent point about numpy.random.seed(None). I updated the answer with that info and a link to the docs.
– John1024
Apr 10 '17 at 0:21
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