大约有 46,000 项符合查询结果(耗时:0.0640秒) [XML]

https://stackoverflow.com/ques... 

PHP regular expressions: No ending delimiter '^' found in

... PHP regex strings need delimiters. Try: $numpattern="/^([0-9]+)$/"; Also, note that you have a lower case o, not a zero. In addition, if you're just validating, you don't need the capturing group, and can simplify the regex to /^\d+...
https://stackoverflow.com/ques... 

String formatting: % vs. .format vs. string literal

...aving to be compatible with Python 2.5 To answer your second question, string formatting happens at the same time as any other operation - when the string formatting expression is evaluated. And Python, not being a lazy language, evaluates expressions before calling functions, so in your log.deb...
https://stackoverflow.com/ques... 

Remove last character from string. Swift language

How can I remove last character from String variable using Swift? Can't find it in documentation. 22 Answers ...
https://stackoverflow.com/ques... 

How to compare strings in Bash

How do I compare a variable to a string (and do something if they match)? 10 Answers 1...
https://stackoverflow.com/ques... 

Encrypt Password in Configuration Files? [closed]

...tKeySpec; public class ProtectedConfigFile { public static void main(String[] args) throws Exception { String password = System.getProperty("password"); if (password == null) { throw new IllegalArgumentException("Run with -Dpassword=<password>"); } ...
https://stackoverflow.com/ques... 

In C# what is the difference between ToUpper() and ToUpperInvariant()?

... public class Test { [STAThread] static void Main() { string invariant = "iii".ToUpperInvariant(); CultureInfo turkey = new CultureInfo("tr-TR"); Thread.CurrentThread.CurrentCulture = turkey; string cultured = "iii".ToUpper(); Font bigFont = new ...
https://stackoverflow.com/ques... 

val-mutable versus var-immutable in Scala

...collection.mutable.ArrayBuffer object MyObject { def main(args: Array[String]) { val a = ArrayBuffer(1,2,3,4) silly(a) println(a) // a has been modified here } def silly(a: ArrayBuffer[Int]): Unit = { a += 10 println(s"length: ${a.length}") ...
https://stackoverflow.com/ques... 

Xml serialization - Hide null values

...bleInt.HasValue; } Here is a full sample public class Person { public string Name {get;set;} public int? Age {get;set;} public bool ShouldSerializeAge() { return Age.HasValue; } } Serialized with the following code Person thePerson = new Person(){Name="Chris"}; XmlSerializer xs =...
https://stackoverflow.com/ques... 

C#: Printing all properties of an object [duplicate]

... ObjectDumper is now available. It also provides an extension method DumpToString and Dump to Object class. Handy. – IsmailS Jun 17 '15 at 9:43  |  ...
https://stackoverflow.com/ques... 

HttpWebRequest using Basic authentication

...he name "Authorization" and the value "Basic BASE64({USERNAME:PASSWORD})" String username = "abc"; String password = "123"; String encoded = System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(username + ":" + password)); httpWebRequest.Headers.Add("Authorization",...