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Hidden features of Windows batch files
...ry convenient command to use in the command prompt:
C:\some_directory> start .
This will open up Windows Explorer in the "some_directory" folder.
I have found this a great time-saver.
share
...
How to create id with AUTO_INCREMENT on Oracle?
...ts ADD (
CONSTRAINT dept_pk PRIMARY KEY (ID));
CREATE SEQUENCE dept_seq START WITH 1;
Trigger definition:
CREATE OR REPLACE TRIGGER dept_bir
BEFORE INSERT ON departments
FOR EACH ROW
BEGIN
SELECT dept_seq.NEXTVAL
INTO :new.id
FROM dual;
END;
/
UPDATE:
IDENTITY column is now ava...
How do I connect to this localhost from another computer on the same network?
...resolv and google servers server=8.8.8.8 server=8.8.8.4.
*Note:* ALWAYS restart DNSmasq if modifying /etc/hosts file as no changes will take effect otherwise.
Step 2: Firewall
To work, pompei needs to allow incoming and outgoing 'domain' packets, which are going from and to port 53. Of course! T...
Run Command Prompt Commands
...C copy /b Image1.jpg + Archive.rar Image2.jpg";
System.Diagnostics.Process.Start("CMD.exe",strCmdText);
EDIT:
This is to hide the cmd window.
System.Diagnostics.Process process = new System.Diagnostics.Process();
System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStart...
C# Sort and OrderBy comparison
...);
const int COUNT = 1000000;
Stopwatch watch = Stopwatch.StartNew();
for (int i = 0; i < COUNT; i++)
{
Sort(persons);
}
watch.Stop();
Console.WriteLine("Sort: {0}ms", watch.ElapsedMilliseconds);
watch = Stopwatch.Start...
psql: FATAL: role “postgres” does not exist
... name is the same as your login (short) name.
When Postgres.app first starts up, it creates the $USER database,
which is the default database for psql when none is specified. The
default user is $USER, with no password.
Some scripts (e.g., a database backup created with pgdump on a Linux ...
Visual Studio debugging/loading very slow
... Visual Studio is typically painfully slow to debug or just plain load ("start without debugging") my ASP.NET MVC sites. Not always: at first, the projects will load nice and fast, but once they load slow, they'll always load slow after that. I could be waiting 1-2 minutes or more.
...
How can I record a Video in my Android App.?
...der();
} else {
recording = true;
recorder.start();
}
}
public void surfaceCreated(SurfaceHolder holder) {
prepareRecorder();
}
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}
...
What's a good rate limiting algorithm?
...
A Token Bucket is fairly simple to implement.
Start with a bucket with 5 tokens.
Every 5/8 seconds: If the bucket has less than 5 tokens, add one.
Each time you want to send a message: If the bucket has ≥1 token, take one token out and send the message. Otherwise, wa...
What does the brk() system call do?
...e-mmap) Unix the data segment was continuous with the heap; before program start, the kernel would load the "text" and "data" blocks into RAM starting at address zero (actually a little above address zero, so that the NULL pointer genuinely didn't point to anything) and set the break address to the ...