大约有 44,000 项符合查询结果（耗时：0.0787秒） [XML]
byte[] to hex string [duplicate]
...HexString or Kurt's ToHex.
I also found it interesting that string.Concat and string.Join are much slower than StringBuilder implementations for long strings, but similar for shorter arrays. Probably due to expanding the StringBuilder on the longer strings, so setting the initial size should negat...
Android XML Percent Symbol
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The Android Asset Packaging Tool (aapt) has become very strict in its latest release and is now used for all Android versions. The aapt-error you're getting is generated because it no longer allows non-positional format specifier...
Is there a sleep function in JavaScript? [duplicate]
... answered Jul 17 '09 at 3:18
AndromedaAndromeda
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Windows API Code Pack: Where is it? [closed]
Why has itself and the evidence it ever existed been removed?
6 Answers
6
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If strings are immutable in .NET, then why does Substring take O(n) time?
... liked this question so much, I just blogged it. See Strings, immutability and persistence
The short answer is: O(n) is O(1) if n does not grow large. Most people extract tiny substrings from tiny strings, so how the complexity grows asymptotically is completely irrelevant.
The long answer is:
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How to simulate a higher resolution screen? [closed]
...I'm wrong, simply create an iframe with style="desired width & height" and src="your/test.site" as the only child of <body>. Should display the site as if the resolution was the specified width/height and result in scroll bars to examine it.
Not as convenient as using a third party, havi...
Strange SQLAlchemy error message: TypeError: 'dict' object does not support indexing
I am using hand crafted SQL to fetch data from a PG database, using SqlAlchemy. I am trying a query which contains the SQL like operator '%' and that seems to throw SqlAlcjhemy through a loop:
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地图组件（高德地图） · App Inventor 2 中文网
...r drags it.
LongClick()
The LongClick event runs when the user presses and holds the 标记 and then releases it.
This event will only trigger if Draggable is 假 because it
uses the same gesture as StartDrag.
StartDrag()
The StartDrag event runs when the user presses and holds the 标记 ...
How to clear the cache in NetBeans
I created a project in NetBeans, and I would like to clear the NetBeans cache.
13 Answers
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mongo group query how to keep fields
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@Juliomac, I believe if your desired output is $max/$min and keeping fields that are not in the $group _id, you can $sort before with the desired field then group and use $first or $last operators on any field. When accumulating, the idea to include other fields (which are accumula...