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Can I grep only the first n lines of a file?
... be faster you're solution is not searching for regexps but only for fixed strings. awk '{ if ( NR <= 10 ) { if( $0 ~ "YOUR_REGEXP") { print } } else { exit; } }' textfile does.
– Zsolt Botykai
Jan 7 '12 at 10:06
...
Why do we need the “event” keyword while defining events?
...a class. It is indeed a reference type
public delegate void MyDelegate(string inputs);
//The following line is illegal. It can only be an instance. so it cannot be directly under namespace
//public event MyDelegate MyEvent;
public class MyClassA
{
public event MyDelega...
What is the difference between Digest and Basic Authentication?
...tion uses base64 encoding(not encryption) for generating our cryptographic string which contains the information of username and password. HTTP Basic doesn’t need to be implemented over SSL, but if you don’t, it isn’t secure at all. So I’m not even going to entertain the idea of using it wit...
Should I impose a maximum length on passwords?
...hed, the password length wouldn't matter to them (hash functions convert a string of any length to a fixed length).
– Vicky Chijwani
Apr 15 '17 at 13:58
|...
Under what circumstances is an SqlConnection automatically enlisted in an ambient TransactionScope T
...d anything.
Q1. Yes, unless "enlist=false" is specified in the connection string. The connection pool finds a usable connection. A usable connection is one that's not enlisted in a transaction or one that's enlisted in the same transaction.
Q2. The second connection is an independent connection,...
StringLength vs MaxLength attributes ASP.NET MVC with Entity Framework EF Code First
What is the difference in behavior of [MaxLength] and [StringLength] attributes?
8 Answers
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How to sum array of numbers in Ruby?
... using array.map(...).inject(...) is inefficient, you will iterate through all data twice. Try array.inject(0) { |sum, product| sum += product.price }
– everett1992
Apr 4 '13 at 6:11
...
Espresso: Thread.sleep( );
...{
return isRoot();
}
@Override
public String getDescription() {
return "wait for a specific view with id <" + viewId + "> during " + millis + " millis.";
}
@Override
public void perform(final UiController uiController, f...
How to get all enum values in Java?
...("1 rs"), NICKLE("5 rs"), DIME("10 rs"), QUARTER("25 rs");
private String value;
private Currency(String brand) {
this.value = brand;
}
@Override
public String toString() {
return value;
}
}
public static void main(Str...
Android - Set fragment id
...
You can't set a fragment's ID programmatically.
There is however, a String tag that you can set inside the FragmentTransaction which can be used to uniquely identify a Fragment.
As Aleksey pointed out, you can pass an ID to FragmentTransaction's add(int, Fragment) method. However, this does ...