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Regular expression that matches valid IPv6 addresses
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Re: other errors... if the user passes in a non-string, TypeError gets eaten. Clearly a list isn't an ipv6, but I'd probably want to have it carp that I was passing in the wrong type.
– Gregg Lind
Apr 21 '10 at 20:44
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What is the effect of extern “C” in C++?
... represented in the binary file as symbols. These symbols are special text strings that uniquely identify a function in the program.
In C, the symbol name is the same as the function name. This is possible because in C no two non-static functions can have the same name.
Because C++ allows overload...
ERROR 1130 (HY000): Host '' is not allowed to connect to this MySQL server [duplicate]
...nd 127.0.0.1, you cannot connect from an external source. If you see other IP addresses, but not the one you're connecting from - that's also an indication.
You will need to add the IP address of each system that you want to grant access to, and then grant privileges:
CREATE USER 'root'@'ip_addres...
Shorten string without cutting words in JavaScript
I'm not very good with string manipulation in JavaScript, and I was wondering how you would go about shortening a string without cutting any word off. I know how to use substring, but not indexOf or anything really well.
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Writing a compiler in its own language
... assembler. Eventually, you will come to the place where you have to parse strings, specifically escape sequences. You will write code to convert \n to the character with the decimal code 10 (and \r to 13, etc).
After that compiler is ready, you will start to reimplement it in C. This process is ca...
Exposing a port on a live Docker container
...with something running on its port 8000, you can run
wget http://container_ip:8000
To get the container's IP address, run the 2 commands:
docker ps
docker inspect container_name | grep IPAddress
Internally, Docker shells out to call iptables when you run an image, so maybe some variation on this w...
What is the difference between string primitives and String objects in JavaScript?
...ain type categories, primivites and objects.
var s = 'test';
var ss = new String('test');
The single quote/double quote patterns are identical in terms of functionality. That aside, the behaviour you are trying to name is called auto-boxing. So what actually happens is that a primitive is convert...
No visible cause for “Unexpected token ILLEGAL”
...rs. It seems the tool uses that character to control word-wrapping on long strings.
UPDATE 2013-01-07
After the latest jsfiddle update, it's now showing the character as a red dot like codepen does. Apparently, it's also not inserting U+200B characters on its own anymore, so this problem should be ...
What is a simple command line program or script to backup SQL server databases?
... the following to backup all Databases:
Use Master
Declare @ToExecute VarChar(8000)
Select @ToExecute = Coalesce(@ToExecute + 'Backup Database ' + [Name] + ' To Disk = ''D:\Backups\Databases\' + [Name] + '.bak'' With Format;' + char(13),'')
From
Master..Sysdatabases
Where
[Name] Not In ('te...
Why is MySQL's default collation latin1_swedish_ci?
...general_ci.
Compared to latin1_general_ci it has support for a variety of extra characters used in European languages. So it’s a best choice if you don’t know what language you will be using, if you are constrained to use only single byte character sets.
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