大约有 47,000 项符合查询结果(耗时:0.0601秒) [XML]

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Version number comparison in Python

... Remove the uninteresting part of the string (trailing zeroes and dots), and then compare the lists of numbers. import re def mycmp(version1, version2): def normalize(v): return [int(x) for x in re.sub(r'(\.0+)*$','', v).split(".")] return cmp(n...
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Why does HTML5 form-validation allow emails without a dot?

...ould have a ^, denoting it should start matching from the beginning of the string and also accept upper case: ^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]+$ – Kohjah Breese Dec 6 '18 at 14:18 ...
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Entity Framework: One Database, Multiple DbContexts. Is this a bad idea? [closed]

...agnostic { [Key] public Guid DiagnosticID { get; set; } public string ApplicationName { get; set; } public DateTime DiagnosticTime { get; set; } public string Data { get; set; } } If you like you could mark all entities as protected inside the main ApplicationDbContext, then cr...
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Best way to serialize an NSData into a hexadeximal string

...king for a nice-cocoa way to serialize an NSData object into a hexadecimal string. The idea is to serialize the deviceToken used for notification before sending it to my server. ...
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Does Python support short-circuiting?

... In other words, if the return value from raw_input is true (not an empty string), it is assigned to name (nothing changes); otherwise, the default '<unknown>' is assigned to name. share | im...
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String literals: Where do they go?

I am interested in where string literals get allocated/stored. 8 Answers 8 ...
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How to convert a string or integer to binary in Ruby?

How do you create integers 0..9 and math operators + - * / in to binary strings. For example: 6 Answers ...
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Unable to generate an explicit migration in entity framework

...ure to check your startup project is one with your db context's connection string. I had this problem when I temporarily changed my startup project and didn't realize that the other project didn't have the same connection string. – Gage Trader Aug 3 '16 at 21:5...
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Make first letter of a string upper case (with maximum performance)

... Updated to C# 8 public static class StringExtensions { public static string FirstCharToUpper(this string input) => input switch { null => throw new ArgumentNullException(nameof(input)), "" => throw new Argume...
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String comparison using '==' vs. 'strcmp()'

...=== only returns true or false, it doesn't tell you which is the "greater" string. share | improve this answer | follow | ...