...hon (2.6+ and 3.3+) task execution tool & library, drawing inspiration from various sources to arrive at a powerful & clean feature set. Below are a few descriptive statements from Invoke's website: Invoke is a Python (2.6+ and 3.3+) task execution tool & library, drawing inspiration f...

...ften faster than using a for loop. Look at this longer list comprehension from the tutorial (the if part filters the comprehension, only parts that pass the if statement are passed into the final part of the list comprehension (here (x,y)): >>> [(x, y) for x in [1,2,3] for y in [3,1,4] if...

...* * myjob.sh >> /var/log/myjob.log 2>&1 will log all output from the cron job to /var/log/myjob.log You might use mail to send emails. Most systems will send unhandled cron job output by email to root or the corresponding user. ...

... Use the keyword final when you want the compiler to prevent a variable from being re-assigned to a different object. Whether the variable is a static variable, member variable, local variable, or argument/parameter variable, the effect is entirely the same. Example Let’s see the effect in ...

...n the heap. Calling intern() on a String has the effect of moving it out from the heap into the permanent generation, and you risk running out of PermGen space. -- From: http://www.codeinstructions.com/2009/01/busting-javalangstringintern-myths.html From JDK 7 (I mean in HotSpot), somethi...

... of how my classes are related to each other? It doesn't need to decompile from JAR file because I have the sources. I know there are quite a few out there but most of those can only generate individual class. I hope there is a tool that can generate class diagram that shows an overview of how all m...

...his, I'll call it dirty way and clean way: 1. The dirty way Create a box from your current virtual environment, using vagrant package command: http://docs.vagrantup.com/v2/cli/package.html Then copy the box to the other pc, add it using vagrant box add and run it using vagrant up as usual. Keep...

...nds the lifetime of the local variable, preventing the reference it stores from getting garbage collected. The only time you need to use it is to stop the GC from being to over-eager with collecting a reference, that can happen in interop scenarios where a reference is passed to unmanaged code. Th...

...nical answer to "what's this TEST thing all about, and how is it different from CMP", which is sort of implied. See my own answer further down for comments about the semantic meaning of the synonymous JE and JZ. Please review my edit since it's pretty major, and it's still your answer. ...

How do I remove all non alphanumeric characters from a string except dash and space characters? 13 Answers ...