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How do you get the index of the current iteration of a foreach loop?
... }
}
public class Example
{
public static void Main()
{
string[] values = new[] { "foo", "bar", "baz" };
values.ForEachWithIndex((item, idx) => Console.WriteLine("{0}: {1}", idx, item));
}
}
...
Which $_SERVER variables are safe?
...ocation, not usually a concern for web servers)
'REQUEST_METHOD' §
'QUERY_STRING'
'HTTP_ACCEPT'
'HTTP_ACCEPT_CHARSET'
'HTTP_ACCEPT_ENCODING'
'HTTP_ACCEPT_LANGUAGE'
'HTTP_CONNECTION'
'HTTP_REFERER'
'HTTP_USER_AGENT'
'AUTH_TYPE' ‖
'PHP_AUTH_DIGEST' ‖
'PHP_AUTH_USER' ‖
'PHP_AUTH_PW' ‖
'PATH_IN...
How to specify function types for void (not Void) methods in Java8?
...could simply create a consumer for that with a lambda expression:
List<String> allJedi = asList("Luke","Obiwan","Quigon");
allJedi.forEach( jedi -> System.out.println(jedi) );
You can see above that in this case, the lambda expression receives a parameter and has no return value.
Now, i...
When do we have to use copy constructors?
...st an example, but you should point out the better solution is to use std::string. The general idea is that only utility classes that manage resources need to overload the Big Three, and that all other classes should just use those utility classes, removing the need to define any of the Big Three.
...
Is there documentation for the Rails column types?
...
Guidelines built from personal experience:
String:
Limited to 255 characters (depending on DBMS)
Use for short text fields (names, emails, etc)
Text:
Unlimited length (depending on DBMS)
Use for comments, blog posts, etc. General rule of thumb: if it's captured v...
R object identification
...
str(UCTURE) hard to remember, 'cause I keep thinking "string" but oh, so useful. Will just have to say strUCTURE ten times.
– Dmitri
Aug 15 '15 at 1:01
ad...
How does git compute file hashes?
... $(printf "\0$s" | wc -c). Note the added empty character. That is, if the string is 'abc' with the added empty character in front the length would yield 4, not 3. Then the results with sha1sum matches git hash-object.
– Michael Ekoka
Apr 11 '17 at 10:24
...
Configuring Log4j Loggers Programmatically
...le = new ConsoleAppender(); //create appender
//configure the appender
String PATTERN = "%d [%p|%c|%C{1}] %m%n";
console.setLayout(new PatternLayout(PATTERN));
console.setThreshold(Level.FATAL);
console.activateOptions();
//add appender to any Logger (here is root)
Logger.getRootLogge...
What are the disadvantages to declaring Scala case classes?
...ically defined
Possible in any class by prefixing params with val
Decent toString() implementation
Yes, very useful, but doable by hand on any class if necessary
Compliant equals() and hashCode()
Combined with easy pattern-matching, this is the main reason that people use case classes
Companion obje...
Eclipse RCP Plug-in开发自学教程（Eclipse3.6） - 文档下载 - 清泛网 - ...
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17.1.1 Externalize Strings ............................................................................................................169
17.1.2 中文属性文件 .................................................................................