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Open URL under cursor in Vim with browser
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Updated: from tpope's tweet today
Press gx. You can customize the browser. On Gnome and Mac OS X it's already use gnome-open/open. Generally you can set g:netrw_browsex_viewer to anything you want.
Original answer:
Don't remember where I get this function. There...
Haskell export current module with additional imported module
Is it possible to write a module in Haskell, which re-exports a module in addition to exporting everything visible inside?
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Downcasting in Java
... String
When a cast (such as this last one) fails at runtime a ClassCastException will be thrown.
In other cases it will work:
Object o = "a String";
String s = (String) o; // this will work, since o references a String
Note that some casts will be disallowed at compile time, because they will...
Multiline strings in VB.NET
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You can use XML Literals to achieve a similar effect:
Imports System.XML
Imports System.XML.Linq
Imports System.Core
Dim s As String = <a>Hello
World</a>.Value
Remember that if you have special characters, you should use a ...
Graph Algorithm To Find All Connections Between Two Arbitrary Vertices
...ardless. Sorry I was unable to do it in C, I'm a bit weak in that area. I expect that you will be able to translate this Java code without too much trouble though.
Graph.java:
import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.Map;
import java...
Twitter image encoding challenge [closed]
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Alright, here's mine: nanocrunch.cpp and the CMakeLists.txt file to build it using CMake. It relies on the Magick++ ImageMagick API for most of its image handling. It also requires the GMP library for bignum arithmetic for its string encoding.
I based my solution off of fractal ...
Java Try Catch Finally blocks without Catch
...The program has a try and a finally block only. Since the catch block is excluded, how does the try block work if it encounters an exception or anything throwable? Does it just go directly to the finally block?
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Using openssl to get the certificate from a server
...o get the right certificate.
openssl s_client -showcerts -servername www.example.com -connect www.example.com:443 </dev/null
Without SNI
If the remote server is not using SNI, then you can skip -servername parameter:
openssl s_client -showcerts -connect www.example.com:443 </dev/null
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python list by value not by reference [duplicate]
Let's take an example
11 Answers
11
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quick random row selection in Postgres
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You might want to experiment with OFFSET, as in
SELECT myid FROM mytable OFFSET floor(random()*N) LIMIT 1;
The N is the number of rows in mytable. You may need to first do a SELECT COUNT(*) to figure out the value of N.
Update (by Antony Hat...