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Can I replace groups in Java regex?
...nt method:
public static String replaceGroup(String regex, String source, int groupToReplace, String replacement) {
return replaceGroup(regex, source, groupToReplace, 1, replacement);
}
public static String replaceGroup(String regex, String source, int groupToReplace, int groupOccurrence, Stri...
How to reliably guess the encoding between MacRoman, CP1252, Latin1, UTF-8, and ASCII
...ct thing would be to guess the encoding, then use the native2ascii tool to convert all non-ASCII characters to Unicode escape sequences.
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What is the best way to check for Internet connectivity using .NET?
What is the fastest and most efficient way to check for Internet connectivity in .NET?
27 Answers
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Can we write our own iterator in Java?
...
Sure. An iterator is just an implementation of the java.util.Iterator interface. If you're using an existing iterable object (say, a LinkedList) from java.util, you'll need to either subclass it and override its iterator function so that you return your own, or provide a means of wrapping a sta...
How do I automatically scroll to the bottom of a multiline text box?
I have a textbox with the .Multiline property set to true. At regular intervals, I am adding new lines of text to it. I would like the textbox to automatically scroll to the bottom-most entry (the newest one) whenever a new line is added. How do I accomplish this?
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How to get number of rows using SqlDataReader in C#
...le who try to write their own code to be as generic as possible (usually pointlessly).
– MusiGenesis
Sep 5 '09 at 13:46
5
...
Create an empty data.frame
...ent column types :
df <- data.frame(Doubles=double(),
Ints=integer(),
Factors=factor(),
Logicals=logical(),
Characters=character(),
stringsAsFactors=FALSE)
str(df)
> str(df)
'data.frame': 0 obs. of 5 vari...
Java Reflection Performance
...eption
{
long start = System.currentTimeMillis();
for (int i=0; i<1000000; i++)
{
A a = new A();
a.doSomeThing();
}
System.out.println(System.currentTimeMillis() - start);
}
public static void doReflection() throws Excep...
How to make a countdown timer in Android?
... }
} catch (Exception e) {
e.printStackTrace();
}
}
};
handler.postDelayed(runnable, 0);
}
protected void onStop() {
super.onStop();
handler.removeCallbacks(runnable);
}
}
activity_...
Why do we need break after case statements?
...
Just always add a comment along the lines // Intentional fallthrough. when you omit a break. It's not so much a bad style as "easy to forget a break accidentally" in my opinion. P.S. Of course not in simple cases as in the answer itself.
– double...