大约有 13,700 项符合查询结果(耗时:0.0320秒) [XML]

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Why do I need an IoC container as opposed to straightforward DI code? [closed]

...: public class UglyCustomer : INotifyPropertyChanged { private string _firstName; public string FirstName { get { return _firstName; } set { string oldValue = _firstName; _firstName = value; if(oldValue != value) ...
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LINQ Select Distinct with Anonymous Types

...lt;T> : IEqualityComparer<T> { private Func<T, T, bool> _equals; private Func<T, int> _hashCode; public DelegateComparer(Func<T, T, bool> equals, Func<T, int> hashCode) { _equals= equals; _hashCode = hashCode; } public bool Equ...
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What does enumerate() mean?

What does for row_number, row in enumerate(cursor): do in Python? 5 Answers 5 ...
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How to access session variables from any class in ASP.NET?

I have created a class file in the App_Code folder in my application. I have a session variable 7 Answers ...
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What are the applications of binary trees?

...oving from one level to the next requires one comparison, and there are log_2(m) levels, for a total of log_2(m) comparisons. In contrast, an n-ary tree will require log_2(n) comparisons (using a binary search) to move to the next level. Since there are log_n(m) total levels, the search will requi...
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Is it possible to make the -init method private in Objective-C?

... NS_UNAVAILABLE - (instancetype)init NS_UNAVAILABLE; This is a the short version of the unavailable attribute. It first appeared in macOS 10.7 and iOS 5. It is defined in NSObjCRuntime.h as #define NS_UNAVAILABLE UNAVAILABLE_...
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How to measure time in milliseconds using ANSI C?

...on many systems. You can use this function like this: struct timeval tval_before, tval_after, tval_result; gettimeofday(&tval_before, NULL); // Some code you want to time, for example: sleep(1); gettimeofday(&tval_after, NULL); timersub(&tval_after, &tval_before, &tval_resu...
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Check if a JavaScript string is a URL

...{1,3}\\.){3}\\d{1,3}))'+ // OR ip (v4) address '(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*'+ // port and path '(\\?[;&a-z\\d%_.~+=-]*)?'+ // query string '(\\#[-a-z\\d_]*)?$','i'); // fragment locator return !!pattern.test(str); } ...
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How to convert DateTime? to DateTime

...this purpose. Using it you end up with this code. DateTime UpdatedTime = _objHotelPackageOrder.UpdatedDate ?? DateTime.Now; share | improve this answer | follow ...
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Format number as fixed width, with leading zeros [duplicate]

...format a number as integer of width 3: a <- seq(1,101,25) sprintf("name_%03d", a) [1] "name_001" "name_026" "name_051" "name_076" "name_101" Another is formatC and paste: paste("name", formatC(a, width=3, flag="0"), sep="_") [1] "name_001" "name_026" "name_051" "name_076" "name_101" ...