Double d1 = 25d;
Double d2 = 25d;
if (d1 == d2) {
System.out.println("equal (==)");
} else if (d1.equals(d2)) {
System.out.println("equal (using equals() method)");
}
The output is:
equal (using equals() method)
Tuesday, May 15, 2012
Wednesday, May 2, 2012
Reverse search for a previous command on Linux
Use CTRL-r to reverse search through a history of your previous commands executed in Linux e.g.
Type in the text for a command you are searching for e.g. 'cat'
In this case the last command executed with the substring 'cat' is 'cat test.txt'.
To exit the reverse search just use CTRL-g.
$(reverse-i-search)`':
Type in the text for a command you are searching for e.g. 'cat'
$(reverse-i-search)`cat': cat test.txt
In this case the last command executed with the substring 'cat' is 'cat test.txt'.
To exit the reverse search just use CTRL-g.
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