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Can't install Ruby under Lion with RVM – GCC issues
...was trying to install SiriProxy on a clean Lion installation on Xcode from App Store
I kept getting errors like :
The provided CC(/usr/bin/gcc) is LLVM based.
bash-3.2$ rvm install 1.9.3
ERROR: The provided CC(/usr/bin/gcc) is LLVM based, it is not yet fully supported by ruby and gems, please read...
How do I find duplicates across multiple columns?
...post, but I found this way to be pretty flexible / efficient
select
s1.id
,s1.name
,s1.city
from
stuff s1
,stuff s2
Where
s1.id <> s2.id
and s1.name = s2.name
and s1.city = s2.city
...
Combining two Series into a DataFrame in pandas
I have two Series s1 and s2 with the same (non-consecutive) indices. How do I combine s1 and s2 to being two columns in a DataFrame and keep one of the indices as a third column?
...
C# difference between == and Equals()
...he following code illustrates the subtle differences in behaviors:
string s1 = "test";
string s2 = "test";
string s3 = "test1".Substring(0, 4);
object s4 = s3;
Console.WriteLine("{0} {1} {2}", object.ReferenceEquals(s1, s2), s1 == s2, s1.Equals(s2));
Console.WriteLine("{0} {1} {2}", object.Referenc...
Check whether a string contains a substring
...e regular expressions which is what Perl is famous for:
if ($mystring =~ /s1\.domain\.com/) {
print qq("$mystring" contains "s1.domain.com"\n);
}
The backslashes are needed because a . can match any character. You can get around this by using the \Q and \E operators.
my $substring = "s1.domai...
CruiseControl [.Net] vs TeamCity for continuous integration?
...va version). I've tried almost all of them at some point. I've never been happier than I am with TeamCity. It is very simple to set up and still provides a great deal of power. The build statistics page that shows build times, unit test count, pass rate etc. is very nice. TeamCity's project home pag...
What is C# analog of C++ std::pair?
...
Pavel
2,63422 gold badges1818 silver badges3232 bronze badges
answered Oct 3 '08 at 9:35
Jorge FerreiraJorge Ferreira
...
How to get a string after a specific substring?
...
Don Kirkby
37.7k1717 gold badges163163 silver badges235235 bronze badges
answered Sep 24 '12 at 20:27
Joran BeasleyJoran Beasley
...
Best practices/performance: mixing StringBuilder.append with String.concat
...
+ operator
String s = s1 + s2
Behind the scenes this is translated to:
String s = new StringBuilder(s1).append(s2).toString();
Imagine how much extra work it adds if you have s1 + s2 here:
stringBuilder.append(s1 + s2)
instead of:
stringB...
When should we use intern method of String on String literals
...used on Strings constructed with new String()
Using your example:
String s1 = "Rakesh";
String s2 = "Rakesh";
String s3 = "Rakesh".intern();
String s4 = new String("Rakesh");
String s5 = new String("Rakesh").intern();
if ( s1 == s2 ){
System.out.println("s1 and s2 are same"); // 1.
}
if ( s...