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Preserve colouring after piping grep to grep
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A word of advice:
When using grep --color=always, the actual strings being passed on to the next pipe will be changed. This can lead to the following situation:
$ grep --color=always -e '1' * | grep -ve '12'
11
12
13
Even though the option -ve '12' should exclude the middle line, it...
MySQL, update multiple tables with one query
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Take the case of two tables, Books and Orders. In case, we increase the number of books in a particular order with Order.ID = 1002 in Orders table then we also need to reduce that the total number of books available in our stock by the same number in Books tab...
Postgres unique constraint vs index
As I can understand documentation the following definitions are equivalent:
8 Answers
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How can I get the line number which threw exception?
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Simple way, use the Exception.ToString() function, it will return the line after the exception description.
You can also check the program debug database as it contains debug info/logs about the whole application.
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Can I specify multiple users for myself in .gitconfig?
... You can manually edit those config files with git config --edit and git config --global --edit. And in case you missed Abizern’s comment, a repository’s config file is at <repo-root>/.git/config.
– Rory O'Kane
Apr 25 '12 at 20:01
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Best way to merge two maps and sum the values of same key?
...hat Int's semigroup operator does), hence 100 + 9. If the values had been Strings, a collision would have resulted in string concatenation of the two mapped values (again, because that's what the semigroup operator for String does).
(And interestingly, because string concatenation is not commutati...
Installing multiple instances of the same windows service on a server
...ServiceProcessInstaller });
}
#endregion
private string ServiceName
{
get
{
return (ConfigurationManager.AppSettings["ServiceName"] == null ? "Made4PrintFileProcessingService" : ConfigurationManager.AppSettings["ServiceName"]....
ASP.NET MVC Custom Error Handling Application_Error Global.asax?
...ds HTTPError404() , HTTPError500() , and General() . They all accept a string parameter error . Using or modifying the code below.
What is the best/proper way to pass the data to the Error controller for processing? I would like to have a solution as robust as possible.
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Different results with Java's digest versus external utilities
... Main()
{
using (var md5 = MD5.Create())
{
string path = "c:/Windows/System32/Calc.exe";
var bytes = md5.ComputeHash(File.ReadAllBytes(path));
Console.WriteLine(BitConverter.ToString(bytes));
}
}
}
And here's a console session (mi...
CodeIgniter activerecord, retrieve last insert id?
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Shame on me...
I looked at the user guide and the first function is $this->db->insert_id();
This also works with activerecord inserts...
EDIT: I updated the link
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