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CSV API for Java [closed]
...ecode.opencsv.CSVReader;
String fileName = "data.csv";
CSVReader reader = new CSVReader(new FileReader(fileName ));
// if the first line is the header
String[] header = reader.readNext();
// iterate over reader.readNext until it returns null
String[] line = reader.readNext();
There were some oth...
How to navigate to a directory in C:\ with Cygwin?
... add something that helps me out a lot with cygwin. Whenever setting up a new system, I always do this
ln -s /cygdrive/c /c
This creates a symbolic link to /cygdrive/c with a new file called /c (in the home directory)
Then you can do this in your shell
cd /c/Foo
cd /c/
Very handy.
...
How can a Java program get its own process ID?
.... Each running virtual machine
could have a different name.
In Java 9 the new process API can be used:
long pid = ProcessHandle.current().pid();
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How to delete cookies on an ASP.NET website
...
if (Request.Cookies["UserSettings"] != null)
{
HttpCookie myCookie = new HttpCookie("UserSettings");
myCookie.Expires = DateTime.Now.AddDays(-1d);
Response.Cookies.Add(myCookie);
}
At the moment of Session.Clear():
All the key-value pairs from Session collection are removed. Sessio...
Finish all previous activities
...
Use:
Intent intent = new Intent(getApplicationContext(), Home.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
This will clear all the activities on top of home.
Assuming you are finishing the login screen when ...
How can I change the table names when using ASP.NET Identity?
...and therefore the latest (RTM) version of AspNet.Identity. When I create a new web project, I select "Individual User Accounts" for authentication. This creates the following tables:
...
List of standard lengths for database fields
... is 255 characters long on an envelope?
– Be Kind To New Users
Nov 10 '18 at 4:44
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Expansion of variables inside single quotes in a command in Bash
...it, but the shell also expands the ANSI C character escapes (like \n for a newline, \t for tab, and \xHH for the character with hexadecimal code HH). Otherwise, however, they behave as single-quoted strings: no parameter or command substitution takes place:
echo $'"Thank you. That\'ll be $4.96, pl...
How to create a custom exception type in Java? [duplicate]
... }
}
Usage:
try
{
if(word.contains(" "))
{
throw new WordContainsException();
}
}
catch(WordContainsException ex)
{
// Process message however you would like
}
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Distributed sequence number generation?
...: A per-generator counter, which each generator increments by one for each new ID generated. This ensures that IDs generated at the same moment (same timestamps) do not overlap.
The last 10 or so bits: A unique value for each generator. Using this, we don't need to do any synchronization between gen...