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How to properly compare two Integers in Java?
...ystem.out.println(x == y);
is guaranteed to print false. Interning of "small" autoboxed values can lead to tricky results:
Integer x = 10;
Integer y = 10;
System.out.println(x == y);
This will print true, due to the rules of boxing (JLS section 5.1.7). It's still reference equality being used,...
jQuery access input hidden value
...$(':hidden#foo').val());
alert($('input:hidden[name=zyx]').val());
Those all mean the same thing in this example.
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Running SSH Agent when starting Git Bash on Windows
... session, you can add a script to ~/.profile or ~/.bashrc (with ~ being usually set to %USERPROFILE%), in order for said session to launch automatically the ssh-agent. If the file doesn't exist, just create it.
This is what GitHub describes in "Working with SSH key passphrases".
The "Auto-launchi...
Uppercase or lowercase doctype?
...
In HTML, the DOCTYPE is case insensitive. The following DOCTYPEs are all valid:
<!doctype html>
<!DOCTYPE html>
<!DOCTYPE HTML>
<!DoCtYpE hTmL>
In XML serializations (i.e. XHTML) the DOCTYPE is not required, but if you use it, DOCTYPE should be uppercase:
<!DOCTY...
Error during installing HAXM, VT-X not working
... appropriate file HAXM file for Windows 7 64 bit, unpacked and started installing. However, during the installation process I get this error:
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Optimal way to concatenate/aggregate strings
... NameCount
FROM Partitioned
WHERE NameNumber = 1
UNION ALL
SELECT
P.ID,
CAST(C.FullName + ', ' + P.Name AS nvarchar),
P.Name,
P.NameNumber,
P.NameCount
FROM Partitioned AS P
INNER JOIN Concatenated AS C
...
Selecting/excluding sets of columns in pandas [duplicate]
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@3kstc you can use df1.iloc[:, [-1]] this will select all rows, last column.
– Kocur4d
Apr 25 '18 at 10:16
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Hello World in Python [duplicate]
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"requires parenthesis" is not really the adequate explanation as to the change from 2.x to 3 :)
– Paolo Bergantino
Jul 3 '09 at 0:29
15
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How to always show scrollbar
...s="vertical" along with android:fadeScrollbars="false" or it won't show at all in some cases.
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Pass column name in data.table using variable [duplicate]
... I already have a gazillion column names in a character vector all there with double quotes around them. How do I get rid of the quotes?
– Farrel
Jun 28 '16 at 0:23
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