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Evaluating string “3*(4+2)” yield int 18 [duplicate]
...NET framework that can evaluate a numeric expression contained in a string and return the result? F.e.:
14 Answers
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What is sharding and why is it important?
I think I understand sharding to be putting back your sliced up data (the shards) into an easy to deal with aggregate that makes sense in the context. Is this correct?
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SQL Server - SELECT FROM stored procedure
... what if, we need to send parameters to mulple stored procedures and combine them into one one big stored procedure? Can view, take parameters, like stored procedures does
– mrN
Aug 18 '11 at 7:14
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Can I set enum start value in Java?
... just labels for integers.
Java enums are implemented more like classes - and they can even have multiple attributes.
public enum Ids {
OPEN(100), CLOSE(200);
private final int id;
Ids(int id) { this.id = id; }
public int getValue() { return id; }
}
The big difference is that th...
Getting the last argument passed to a shell script
...last
This one is also pretty portable (again, should work with bash, ksh and sh) and it doesn't shift the arguments, which could be nice.
It uses the fact that for implicitly loops over the arguments if you don't tell it what to loop over, and the fact that for loop variables aren't scoped: they ...
How do I write stderr to a file while using “tee” with a pipe?
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I'm assuming you want to still see STDERR and STDOUT on the terminal. You could go for Josh Kelley's answer, but I find keeping a tail around in the background which outputs your log file very hackish and cludgy. Notice how you need to keep an exra FD and do cleanu...
Can I store the .git folder outside the files I want tracked?
...e git as a backup system. So let's say I have a directory ./backup/myfiles and I want to back that up using git. To keep things clean I don't want to have a .git directory in the myfiles folder, so I thought I could create ./backup/git_repos/myfiles. From looking at the git docs, I've tried doing th...
How to extract the hostname portion of a URL in JavaScript
...ibility for window.location.origin is not clear. I've checked it in chrome and it returned http://sub.domain.com:port if the port is anything but 80, and http://sub.domain.com if the port is 80.
Special thanks to @torazaburo for mentioning that to me.
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MySQL Conditional Insert
... WHERE user = 123
AND item = 456)
In this, dual is a table with one row only (found originally in Oracle, now in mysql too). The logic is that the SELECT statement generates a single row of data with the required values, but only when the v...
Input size vs width
...he css style will override the size attribute in browsers that support CSS and make the field the correct width, and for those that don't, it will fall back to the specified number of characters.
Edit: I should have mentioned that the size attribute isn't a precise method of sizing: according to th...