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Best way to compare 2 XML documents in Java
...tomated test of an application that basically translates a custom message format into an XML message and sends it out the other end. I've got a good set of input/output message pairs so all I need to do is send the input messages in and listen for the XML message to come out the other end.
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Does use of final keyword in Java improve the performance?
In Java we see lots of places where the final keyword can be used but its use is uncommon.
13 Answers
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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
...tice1 are not the problem because they are accessed sequentially.
However for matice2 if a full column fits in L2 (i.e when you access matice2[0, 0], matice2[1, 0], matice2[2, 0] ... etc, nothing gets evicted) than there is no problem with cache misses with matice2 either.
Now to go deeper in how c...
How do you round a float to two decimal places in jruby
... I know it does not appear to be the intention of Sam to round the number for the purpose of presenting something like a currency, but be aware that using #round(precision) will not work as intended if you are trying to do this (3.round(2) #=> 3.0, not 3.00). To get this, check out the answer by ...
Python name mangling
...hidden as possible. If in doubt about whether a variable should be private or protected, it's better to go with private.
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Does ruby have real multithreading?
...en threads . How can I create real "OS-level" threads in my application in order to make use of multiple cpu cores for processing?
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Is memcached a dinosaur in comparison to Redis? [closed]
I have worked quite a bit with memcached the last weeks and just found out about Redis. When I read this part of their readme, I suddenly got a warm, cozy feeling in my stomach:
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Retrieve version from maven pom.xml in code
...Create a .properties file in (most commonly) your src/main/resources directory (but in step 4 you could tell it to look elsewhere).
Set the value of some property in your .properties file using the standard Maven property for project version:
foo.bar=${project.version}
In your Java code, load the...
String to LocalDate
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As you use Joda Time, you should use DateTimeFormatter:
final DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MMM-dd");
final LocalDate dt = dtf.parseLocalDate(yourinput);
If using Java 8 or later, then refer to hertzi's answer
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How do you convert a time.struct_time object into a datetime object?
...use datetime.fromtimestamp() to get the datetime object.
from datetime import datetime
from time import mktime
dt = datetime.fromtimestamp(mktime(struct))
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