大约有 40,000 项符合查询结果（耗时：0.0825秒） [XML]
How many database indexes is too many?
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I voted up but... I would say the extra parse time while interesting and academic, it would never influence my choice for the correct number of indexes. agree?
– Stephanie Page
May 30 '13 at 21:14
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How do I edit the Visual Studio templates for new C# class/interface?
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Extract, edit and recompress. Paths are for the class template, but the interface templates are in the same folder.
You may want to edit the VS template file in each to remove the fact that they don't automatically add refer...
What is the difference between and ?
...: block (hence block-level) applied to them; nothing more (except somewhat extra margin in some instances). However, as aforementioned, they both different greatly in terms of semantics.
The <p> element, as its name somewhat implies, is for paragraphs. Thus, <p> should be used when you...
Can I load a UIImage from a URL?
...image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:MyURL]]];
A much better approach is to use Apple's LazyTableImages to preserve interactivity.
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In Objective-C why should I check if self = [super init] is not nil?
... my superclass's initializer is non-null then is it really still worth the extra clutter to check? (Although NSObject itself doesn't seem to have any for its -init afaict…)
– natevw
Dec 17 '15 at 18:14
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How can I convert immutable.Map to mutable.Map in Scala?
... immutable.Map(1->"one",2->"two")
val myMutableMap: mutable.Map[Int, String] = myImmutableMap.map(identity)(breakOut)
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In Python, how do I convert all of the items in a list to floats?
... have a script which reads a text file, pulls decimal numbers out of it as strings and places them into a list.
12 Answers
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When do you use the “this” keyword? [closed]
...code is more clear. I used to use prefix m_ (member variable) e.g. private string m_name. Now I just use this e.g. if i have class Test { private string a; public someMethod() { this.a = "foo"; } }
– broadband
Jan 10 '14 at 11:17
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PHP session lost after redirect
... Very well written +1, if all fails, just use cookies (randomly generate a string and store it in the db and use that as your cookie value).
– Dave Chen
Jun 21 '13 at 19:03
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Match whitespace but not newlines
... in my horizontal whitespace character class.
In Java:
static public final String HORIZONTAL_WHITESPACE = "[\\p{Blank}\\u200B\\u2060\\uFFEF]"
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