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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 do I get the last four characters from a string in C#?
...ath.Max(0, mystring.Length - 4)); //how many lines is this?
If you're positive the length of your string is at least 4, then it's even shorter:
mystring.Substring(mystring.Length - 4);
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How to drop a table if it exists?
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Is it correct to do the following?
IF EXISTS(SELECT *
FROM dbo.Scores)
DROP TABLE dbo.Scores
No. That will drop the table only if it contains any rows (and will raise an error if the table does not exist).
In...
How many Activities vs Fragments?
...als are very simplified. They just introduce Fragments but I do not agree with the pattern as suggested.
I also agree that it is not a good idea to duplicate your app's logic across many Activities (see DRY Principle on wikipedia).
I prefer the pattern used by the ActionBarSherlock Fragments Dem...
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...
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 to capitalize the first letter of word in a string using Java?
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If you only want to capitalize the first letter of a string named input and leave the rest alone:
String output = input.substring(0, 1).toUpperCase() + input.substring(1);
Now output will have what you want. Check that your input is at least one...
Echo newline in Bash prints literal \n
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edited May 20 '15 at 14:46
answered Dec 11 '11 at 21:04
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How to make type=“number” to positive numbers only
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edited Aug 27 '19 at 7:44
Álvaro González
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