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Compare two files line by line and generate the difference in another file
I want to compare file1 with file2 and generate a file3 which contains the lines in file1 which are not present in file2.
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String variable interpolation Java [duplicate]
... care about performance, you should avoid String.format. Check performance comparison among Java string interpolation from redfin.
– MiaeKim
Oct 22 '19 at 22:18
21
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How do you sort a dictionary by value?
...KeyValuePair<string, string> pair2)
{
return pair1.Value.CompareTo(pair2.Value);
}
);
Since you're targeting .NET 2.0 or above, you can simplify this into lambda syntax -- it's equivalent, but shorter. If you're targeting .NET 2.0 you can only use this syntax if you're using ...
How to check if a String contains only ASCII?
...aracters rather than code points, even if code points are indicated in the comments of earlier versions. Fortunately, the characters required to create code point with a value of U+010000 or over uses two surrogate characters with a value outside of the ASCII range. So the method still succeeds in t...
How can I apply a border only inside a table?
...horter solution which avoid using pseudo-classes by using the next sibling combinator. See my answer.
– dalgard
Aug 31 '14 at 12:13
1
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Easiest way to read from and write to files
...e excerpt:
// Create a file to write to.
string createText = "Hello and Welcome" + Environment.NewLine;
File.WriteAllText(path, createText);
...
// Open the file to read from.
string readText = File.ReadAllText(path);
sha...
Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
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Is there a version control system for database structure changes?
... a table keeps track of your current db version.
To migrate up, you run a command called "db:migrate" which looks at your version and applies the needed scripts. You can migrate down in a similar way.
The migration scripts themselves are kept in a version control system -- whenever you change the ...
How do I escape a single quote in SQL Server?
... If you're using an ORM it will do it for you. If you're building your SQL commands manually you'll want to use the language's "prepared statements" functionality. If you're doing it in Management Studio then you'll have to do the replace.
– Cᴏʀʏ
Feb 15 '14...
How to enable MySQL Query Log?
... enable it from MySQL console
SET general_log = 1;
See http://dev.mysql.com/doc/refman/5.1/en/query-log.html
For mysql 5.1.29+
With mysql 5.1.29+ , the log option is deprecated. To specify the logfile and enable logging, use this in my.cnf in the [mysqld] section:
general_log_file = /path/to/q...