大约有 22,000 项符合查询结果(耗时:0.0302秒) [XML]

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Cast int to varchar

I have below query and need to cast id to varchar 8 Answers 8 ...
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\d is less efficient than [0-9]

...rate a list of all such characters using the following code: var sb = new StringBuilder(); for(UInt16 i = 0; i < UInt16.MaxValue; i++) { string str = Convert.ToChar(i).ToString(); if (Regex.IsMatch(str, @"\d")) sb.Append(str); } Console.WriteLine(sb.ToString()); Which generates...
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What method in the String class returns only the first N characters?

I'd like to write an extension method to the String class so that if the input string to is longer than the provided length N , only the first N characters are to be displayed. ...
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How to convert a string to lower or upper case in Ruby

How do I take a string and convert it to lower or upper case in Ruby? 11 Answers 11 ...
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What is meant by immutable?

...ssues with objects that never change e.g. class Foo { private final String myvar; public Foo(final String initialValue) { this.myvar = initialValue; } public String getValue() { return this.myvar; } } Foo doesn't have to worry that the calle...
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Is there a C# type for representing an integer Range?

...sents the Range in readable format.</summary> /// <returns>String representation of the Range</returns> public override string ToString() { return string.Format("[{0} - {1}]", this.Minimum, this.Maximum); } /// <summary>Determines if the range is ...
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hexadecimal string to byte array in python

I have a long Hex string that represents a series of values of different types. I wish to convert this Hex String into a byte array so that I can shift each value out and convert it into its proper data type. ...
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C++ templates that accept only certain types

...le parenthesis is necessary is that BOOST_STATIC_ASSERT is a macro and the extra parenthesis prevent the preprocessor from interpreting the comma within the is_base_of function arguments as a 2nd macro argument. – jfritz42 Aug 13 '15 at 19:29 ...
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Convert line-endings for whole directory tree (Git)

...r - search, filter and replace text data sfk addhead - insert string at start of text lines sfk addtail - append string at end of text lines sfk patch - change text files through a script sfk snapto - join many text files into one file sfk joinlines ...
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Get battery level and state in Android

...ntent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0); batteryTxt.setText(String.valueOf(level) + "%"); } }; @Override public void onCreate(Bundle b) { super.onCreate(b); setContentView(R.layout.main); batteryTxt = (TextView) this.findViewById(R.id.batteryTxt); this.regis...