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Difference between static and shared libraries?
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Shared libraries are .so (or in Windows .dll, or in OS X .dylib) files. All the code relating to the library is in this file, and it is referenced by programs using it at run-time. A program using a shared library only makes reference to the code that it uses in the shared library.
Static librar...
What's the fastest way to read a text file line-by-line?
...ile line by line you will have to do some benchmarking. I have done some small tests on my computer but you cannot expect that my results apply to your environment.
Using StreamReader.ReadLine
This is basically your method. For some reason you set the buffer size to the smallest possible value (12...
Use PHP composer to clone git repo
I'm trying to use composer to automatically clone a git repository from github that isn't in packagist but it's not working and I can't figure out what am I doing wrong.
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Update Eclipse with Android development tools v. 23
...ny problems of previous ADT version 23.
Step-by-step:
Menu Help → Install New Software...
For "Work with", select the Android source https://dl-ssl.google.com/android/eclipse
Tick ADT v23.0 for installation, then click "Next"
Eclipse will show "Install Remediation Page" since there is conflict...
How do I clear stuck/stale Resque workers?
...me, I would still see this in redis-web:
0 out of 10 Workers Working
Finally, this worked for me to clear all the workers:
Resque.workers.each {|w| w.unregister_worker}
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What are metaclasses in Python?
...ass is an instance of a metaclass.
While in Python you can use arbitrary callables for metaclasses (like Jerub shows), the better approach is to make it an actual class itself. type is the usual metaclass in Python. type is itself a class, and it is its own type. You won't be able to recreate somet...
How can I debug a .BAT script?
...o step through a .bat script? The thing is, I have a build script , which calls a lot of other scripts, and I would like to see what is the order in which they are called, so that I may know where exactly I have to go about and add my modifications.
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In pure functional languages, is there an algorithm to get the inverse function?
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In some cases, yes! There's a beautiful paper called Bidirectionalization for Free! which discusses a few cases -- when your function is sufficiently polymorphic -- where it is possible, completely automatically to derive an inverse function. (It also discusses what makes...
Is floating point math broken?
...arger than the rational number 0.2 but that the closest double to 0.3 is smaller than the rational number 0.3. The sum of 0.1 and 0.2 winds up being larger than the rational number 0.3 and hence disagreeing with the constant in your code.
A fairly comprehensive treatment of floating-point arithmet...
Label encoding across multiple columns in scikit-learn
...mn; I'd rather just have one big LabelEncoder objects that works across all my columns of data.
21 Answers
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