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Include constant in string without concatenating
...ine('FOO', 'bar');
$constants = create_function('$a', 'return $a;');
echo "Hello, my name is {$constants(FOO)}";
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Best practices with STDIN in Ruby?
.... the following 1-line script:
#!/usr/bin/env ruby -n
#example.rb
puts "hello: #{$_}" #prepend 'hello:' to each line from STDIN
#these will all work:
# ./example.rb < input.txt
# cat input.txt | ./example.rb
# ./example.rb input.txt
...
Standard deviation of a list
...
Hello Alex, Could you please post function for calculating sample standard deviation? I am limited with Python2.6, so I have to relay on this function.
– Venu S
Oct 8 '17 at 0:56
...
In Java, is there a way to write a string literal without having to escape quotes?
...;\n"
" <body>\n" +
" <p>Hello World.</p>\n" +
" </body>\n" +
"</html>\n";
System.out.println("this".matches("\\w\\w\\w\\w"));
You would be able to type:
Runtime.getRuntime().exec(`"C:\Program Files\f...
Object.watch() for all browsers?
...`${key} set to ${value}`);
target[key] = value;
}
});
targetProxy.hello_world = "test"; // console: 'hello_world set to test'
If you need to observe changes made to a nested object, then you need to use a specialized library. I published Observable Slim and it works like this:
var test =...
Upload file to FTP using C#
...
Hello what does path.zip in UploadFile method indicate? Do I need a file name to include after the host name? I just have a txt file to send, I thought file name and path to that file is mentioned in localFile .
...
Calling closure assigned to object property directly
...7, you can do
$obj = new StdClass;
$obj->fn = function($arg) { return "Hello $arg"; };
echo ($obj->fn)('World');
or use Closure::call(), though that doesn't work on a StdClass.
Before PHP7, you'd have to implement the magic __call method to intercept the call and invoke the callback (whi...
How to define custom exception class in Java, the easiest way?
... UseCustomException() throws MyException
{
System.out.println("Hello Back Again with custom exception");
throw newExc;
}
public static void main(String args[])
{
try
{
UseCustomException use=new UseCustomException();
}
c...
What does the “static” modifier after “import” mean?
...
public static void main(String args[]){
System.out.println("Hello");
System.out.println("Java");
}
}
With static import
import static java.lang.System.*;
class StaticImportExample{
public static void main(String args[]){
out.println("Hello");//Now no n...
Is there a way to create a function from a string with javascript?
... a function from a string is by using Function:
var fn = Function("alert('hello there')");
fn();
This has as advantage / disadvantage that variables in the current scope (if not global) do not apply to the newly constructed function.
Passing arguments is possible too:
var addition = Function("a...