大约有 40,000 项符合查询结果(耗时:0.0540秒) [XML]

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Why is null an object and what's the difference between null and undefined?

...avaScript: Boolean false. name = ''; You: What is name? JavaScript: Empty string *: name in this context is meant as a variable which has never been defined. It could be any undefined variable, however, name is a property of just about any HTML form element. It goes way, way back and was institute...
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Best way to use PHP to encrypt and decrypt passwords? [duplicate]

...ere is how you would encrypt/decrypt: $key = 'password to (en/de)crypt'; $string = ' string to be encrypted '; // note the spaces To Encrypt: $iv = mcrypt_create_iv( mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC), MCRYPT_DEV_URANDOM ); $encrypted = base64_encode( $iv . ...
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Android TextView Justify Text

...ut)findViewById(R.id.inset_web_view)).addView(view); view.loadData(getString(R.string.hello), "text/html; charset=utf-8", "utf-8"); and html. <string name="hello"> <![CDATA[ <html> <head></head> <body style="text-align:justify;color:gray;background-color:black...
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How to get request URI without context path?

...a prefix pattern, then you can just use HttpServletRequest#getPathInfo(). String pathInfo = request.getPathInfo(); // ... Assuming that the servlet in your example is mapped on /secure, then this will return /users which would be the information of sole interest inside a typical front controller ...
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How do you do Impersonation in .NET?

... = true, CharSet = CharSet.Unicode)] internal static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, out IntPtr phToken); This is the basic call definition, however there is a lot more to consider to actually using it in prod...
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multi-step registration process issues in asp.net mvc (split viewmodels, single model)

...ne for each step: public class Step1ViewModel { [Required] public string SomeProperty { get; set; } ... } public class Step2ViewModel { [Required] public string SomeOtherProperty { get; set; } ... } and so on. All those view models could be backed by a main wizard view ...
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How to avoid having class data shared among instances?

... But why does this happens only for list? When i declared an integer or string outside the init, it was not shared among the objects? Can anyone share any doc link to this concept? – Amal Ts May 20 '15 at 6:03 ...
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[ :Unexpected operator in shell programming [duplicate]

... POSIX sh doesn't understand == for string equality, as that is a bash-ism. Use = instead. The other people saying that brackets aren't supported by sh are wrong, btw. share |...
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Create nice column output in python

... Since Python 2.6+, you can use a format string in the following way to set the columns to a minimum of 20 characters and align text to right. table_data = [ ['a', 'b', 'c'], ['aaaaaaaaaa', 'b', 'c'], ['a', 'bbbbbbbbbb', 'c'] ] for row in table_data: ...
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Explain the encapsulated anonymous function syntax

... not as comprehensive as the accepted answer, it provides some very useful extra information and deserves more votes – Avrohom Yisroel Jul 18 '17 at 13:02 add a comment ...