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What is the C# equivalent of NaN or IsNumeric?
What is the most efficient way of testing an input string whether it contains a numeric value (or conversely Not A Number)? I guess I can use Double.Parse or a regex (see below) but I was wondering if there is some built in way to do this, such as javascript's NaN() or IsNumeric() (was that VB...
What is the purpose of “&&” in a shell command?
As far as I know, using & after the command is for running it in the background.
9 Answers
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How can I record a Video in my Android App.?
...g example using the MediaRecorder:
public class VideoCapture extends Activity implements OnClickListener, SurfaceHolder.Callback {
MediaRecorder recorder;
SurfaceHolder holder;
boolean recording = false;
@Override
public void onCreate(Bundle savedInstanceState) {
super.o...
How does a Linux/Unix Bash script know its own PID?
I have a script in Bash called Script.sh , and it needs to know its own PID (i.e. I need to get PID inside the Script.sh )
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Difference between using bean id and name in Spring configuration file
...names; these
terms refer to the same thing). These
ids must be unique within the
container the bean is hosted in. A
bean will almost always have only one
id, but if a bean has more than one
id, the extra ones can essentially be
considered aliases.
When using XML-based configuratio...
Generate random 5 characters string
I want to create exact 5 random characters string with least possibility of getting duplicated. What would be the best way to do it? Thanks.
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How to pass arguments and redirect stdin from a file to program run in gdb?
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Pass the arguments to the run command from within gdb.
$ gdb ./a.out
(gdb) r < t
Starting program: /dir/a.out < t
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Why is `[` better than `subset`?
...en I need to filter a data.frame, i.e., extract rows that meet certain conditions, I prefer to use the subset function:
2...
Single script to run in both Windows batch and Linux Bash?
Is it possible to write a single script file which executes in both Windows (treated as .bat) and Linux (via Bash)?
11 Answ...
Programmatically find the number of cores on a machine
... platform-independent way? If no such thing exists, what about determining it per-platform (Windows/*nix/Mac)?
19 Answers
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