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Difference between java.io.PrintWriter and java.io.BufferedWriter?
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The API reference for BufferedWriter and PrintWriter detail the differences.
The main reason to use the PrintWriter is to get access to the printXXX methods like println(). You can essentially use a PrintWriter to write to a file just like you would use System...
How to detect the current OS from Gradle
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Actually, I looked at the Gradle project, and this looks a little cleaner as it uses Ant's existing structure:
import org.apache.tools.ant.taskdefs.condition.Os
task checkWin() << {
if (Os.isFamily(Os.FAMILY_WINDOWS)) {
println "*** Windows "
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Multi-line string with extra space (preserved indentation)
...c sounds more convenient for this purpose. It is used to send multiple commands to a command interpreter program like ex or cat
cat << EndOfMessage
This is line 1.
This is line 2.
Line 3.
EndOfMessage
The string after << indicates where to stop.
To send these lines to a file, use:
c...
How to handle configuration in Go [closed]
I'm new at Go programming, and I'm wondering: what is the preferred way to handle configuration parameters for a Go program (the kind of stuff one might use properties files or ini files for, in other contexts)?
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Is there a math nCr function in python? [duplicate]
...ython 2
As of Python 3.8, binomial coefficients are available in the standard library as math.comb:
>>> from math import comb
>>> comb(10,3)
120
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PHP date yesterday [duplicate]
...terval is negative here, we must add() it here)
See also: DateTime::sub() and DateInterval
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Handle file download from ajax post
...or it might be a file (as an attachment). I can easily detect Content-Type and Content-Disposition in my ajax call, but once I detect that the response contains a file, how do I offer the client to download it? I've read a number of similar threads here but none of them provide the answer I'm lookin...
Best way to add page specific JavaScript in a Rails 3 app?
...like to do is include the per-view Javascript in a content_for :head block and then yield to that block in your application layout. For example
If it's pretty short then:
<% content_for :head do %>
<script type="text/javascript">
$(function() {
$('user_rating_positve').clic...
How to select only the first rows for each unique value of a column
...P BY
CName
) foo
JOIN
MyTable M ON foo.CName = M.CName AND foo.First = M.Inserted
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Does the Java &= operator apply & or &&?
...ting makes a difference to the result, but in this one b has to be boolean and the type-cast does nothing.)
And, for the record, a &&= b; is not valid Java. There is no &&= operator.
In practice, there is little semantic difference between a = a & b; and a = a && b;....