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How do you round a float to two decimal places in jruby
... I know it does not appear to be the intention of Sam to round the number for the purpose of presenting something like a currency, but be aware that using #round(precision) will not work as intended if you are trying to do this (3.round(2) #=> 3.0, not 3.00). To get this, check out the answer by ...
How can I convert a DateTime to the number of seconds since 1970?
... static DateTime ConvertFromUnixTimestamp(double timestamp)
{
DateTime origin = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
return origin.AddSeconds(timestamp);
}
public static double ConvertToUnixTimestamp(DateTime date)
{
DateTime origin = new DateTime(1970, 1, 1, 0, 0, 0,...
How to jump to a particular line in a huge text file?
...ingle file. This is used by the traceback module to retrieve source lines for inclusion in the formatted traceback...
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Border around tr element doesn't show?
It seems like Chrome/Firefox do not render borders on tr , but it renders the border if the selector is table tr td .
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Exactly what is a “third party”? (And who are the first and second party?)
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If you are developing software for a client, then there is a contract between you/your company, and the client/their company. These are the two parties to the contract. Anyone else, not bound by the contract, is a third party. It's used wherever a contract ...
Undo “git add ”?
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To remove a directory and everything inside it from the index,
git rm --cached -r dir
The --cached switch makes git rm operate on the index only and not touch the working copy. The -r switch makes it recursive.
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What does the smiley face “:)” mean in CSS?
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From an article at javascriptkit.com, that's applied for IE 7 and earlier versions:
if you add a non-alphanumeric character such as an asterisk (*) immediately before a property name, the property will be applied in IE and not in other browsers.
Also there's a hack for <...
How can I dynamically create derived classes from a base class
For example I have a base class as follows:
3 Answers
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MySQL high CPU usage [closed]
...probably want to turn off persistent connections as they almost always do more harm than good.
Secondly I'd say you want to double check your MySQL users, just to make sure it's not possible for anyone to be connecting from a remote server. This is also a major security thing to check.
Thirdly I'd...
How to run Ruby code from terminal?
...w lines of Ruby code from terminal, but I can't find the needed parameter for it.
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