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What's a quick way to comment/uncomment lines in Vim?
...ks I use most of the time block selection.
Put your cursor on the first # character, press CtrlV (or CtrlQ for gVim), and go down until the last commented line and press x, that will delete all the # characters vertically.
For commenting a block of text is almost the same:
First, go to the firs...
Easily measure elapsed time
...easuring mechanism and have each callable's run time measured with minimal extra code, just by being called through a timer structure. Plus, at compile time you can parametrize the timing type (milliseconds, nanoseconds etc).
Thanks to the review by Loki Astari and the suggestion to use variadic t...
Are string.Equals() and == operator really same? [duplicate]
...pes of the objects:
// Avoid getting confused by interning
object x = new StringBuilder("hello").ToString();
object y = new StringBuilder("hello").ToString();
if (x.Equals(y)) // Yes
// The compiler doesn't know to call ==(string, string) so it generates
// a reference comparision instead
if (x ==...
Error 908: Permission Receive SMS - #5 by Taifun - MIT App Inventor Help - MIT App Inventor Community
...eDirect and MakePhoneCallDirect blocks that do the old behavior that needs extra permissions. We chose to have the existing SendMessage and MakePhoneCall blocks launch the default apps via Intents , as recommended by Google policy, which should work for most people.
For receiving, we made it so tha...
Comparing Java enum members: == or equals()?
...
I do this when .equals()ing string values, but I still think that it's a crappy way to write null-safe code. I'd much rather have an operator (or a method, but I know that [null object].equals won't ever be null-safe in Java because of how the dot opera...
Exception.Message vs Exception.ToString()
...wever, I read an article which states that it's better to use Exception.ToString() . With the latter, you retain more crucial information about the error.
...
Retain precision with double in Java
...int things out in a slightly friendlier format, try java.util.Formatter or String.format. In the format string specify a precision less than the full precision of a double. To 10 significant figures, say, 11.399999999999 is 11.4, so the result will be almost as accurate and more human-readable in ca...
Open Redis port for remote connections
...
in config file I added string bind 0.0.0.0 after string bind 127.0.0.1. Restarted redis. And now can connect remotly.
– Maxim Yefremov
Sep 30 '13 at 10:08
...
Calling the base constructor in C#
...:
public class MyExceptionClass : Exception
{
public MyExceptionClass(string message, string extrainfo) : base(message)
{
//other stuff here
}
}
Note that a constructor is not something that you can call anytime within a method. That's the reason you're getting errors in your ...
How do I delete from multiple tables using INNER JOIN in SQL server
... from next table instead of using inner join and going through all of this extra text?? Basically, skipping the inner join I just need 2 simple queries.... Or is this method any more efficient?
– Colandus
Mar 10 '13 at 13:16
...