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How to check if a URL is valid
...:isbn:0451450523" =~ URI::regexp
=> 0
That being said, as far as I know, Ruby doesn't have a default way to parse URLs , so you'll most likely need a gem to do so. If you need to match URLs specifically in HTTP or HTTPS format, you could do something like this:
uri = URI.parse(my_possible_ur...
How to make HTML input tag only accept numerical values?
...p://jsfiddle.net/VmtF5/
Update 2018-03-12: Browser support is much better now it's supported by the following:
Chrome 6+
Firefox 29+
Opera 10.1+
Safari 5+
Edge
(Internet Explorer 10+)
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im...
Create two blank lines in Markdown
...
I only know the options below. It would be great to take a list of all of them and comment them differences
# RAW
## Creates 2 Lines that CAN be selected as text
## -------------------------------------------------
### The non-br...
Using context in a fragment
...(Activity activity) method was deprecated in API level 23.
Solution
Now to get context in Fragment we can use onAttach (Context context)
onAttach (Context context)
Called when a fragment is first attached to its context. onCreate(Bundle) will be called after this.
Documentation ...
Load dimension value from res/values/dimension.xml from source code
....dimen.test) / getResources().getDisplayMetrics().density)
dp will be 48 now
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SQL : BETWEEN vs =
... of the answer, the comments and the fact that my code obviously has a bug now =)
– xmashallax
Sep 19 '16 at 11:48
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git undo all uncommitted or unsaved changes
... git reset --hard HEAD after viewing this post . I responds with head is now at 18c3773... but when I look at my local source all the files are still there. What am I missing?
...
What is the simplest way to get indented XML with line breaks from XmlDocument?
... doc.Save(writer);
return sb.ToString();
}
}
It works for me now, probably you would need to scan all child nodes for the XmlProcessingInstruction node, not just the first one?
Update April 2015:
Since I had another case where the encoding was wrong, I searched for how to enforce U...
Can't connect to local MySQL server through socket '/var/mysql/mysql.sock' (38)
...er from the command line rather than powering off the server.
shutdown -h now
This will stop the running services before powering down the machine.
Based on Centos, an additional method for getting it back up again when you run into this problem is to move mysql.sock:
mv /var/lib/mysql/mysql.so...
Store boolean value in SQLite
...ximum of 127. One character really.
A C example from what I'm working on now. has() is a function that returns 1 if the 2nd string is in the first one. inp is the input string to this function. misc is an unsigned char initialized to 0.
if (has(inp,"sap='Spanish'") > 0)
misc += 1;
if (has...