大约有 30,000 项符合查询结果(耗时:0.0515秒) [XML]

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How do I get a substring of a string in Python?

Is there a way to substring a string in Python, to get a new string from the third character to the end of the string? 13 A...
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What is the difference between HashSet and List?

...ples, You can not use HashSet like in the following example. HashSet<string> hashSet1 = new HashSet<string>(){"1","2","3"}; for (int i = 0; i < hashSet1.Count; i++) Console.WriteLine(hashSet1[i]); hashSet1[i] would produce an error: Cannot apply indexing with [] to an exp...
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Python's many ways of string formatting — are the older ones (going to be) deprecated?

Python has at least six ways of formatting a string: 5 Answers 5 ...
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Find a value in an array of objects in Javascript [duplicate]

...n an array of named objects, and I need to get the object where "name" is "string 1". Here is an example array. 20 Answers ...
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How can I run an external command asynchronously from Python?

...d gives easy ways to have callbacks when your process spits out predefined strings, and generally makes interacting with the process much easier. share | improve this answer | ...
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Determine if a String is an Integer in Java [duplicate]

I'm trying to determine if a particular item in an Array of strings is an integer or not. 9 Answers ...
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XPath - Selecting elements that equal a value

... The XPath spec. defines the string value of an element as the concatenation (in document order) of all of its text-node descendents. This explains the "strange results". "Better" results can be obtained using the expressions below: //*[text() = 'qwe...
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How can I String.Format a TimeSpan object with a custom format in .NET?

What is the recommended way of formatting TimeSpan objects into a string with a custom format? 19 Answers ...
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String isNullOrEmpty in Java? [duplicate]

...ries (including apache/google/...), a static isNullOrEmpty() method for Strings ? 10 Answers ...
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Android Shared preferences for creating one time activity (example) [closed]

... Setting values in Preference: // MY_PREFS_NAME - a static String variable like: //public static final String MY_PREFS_NAME = "MyPrefsFile"; SharedPreferences.Editor editor = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE).edit(); editor.putString("name", "Elena"); editor.putInt...