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How do I retrieve the number of columns in a Pandas data frame?
How do you programmatically retrieve the number of columns in a pandas dataframe? I was hoping for something like:
6 Answer...
How to get a variable name as a string in PHP?
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You could use get_defined_vars() to find the name of a variable that has the same value as the one you're trying to find the name of. Obviously this will not always work, since different variables often have the same values, but it's the only wa...
Psql list all tables
I would like to list all tables in the liferay database in my PostgreSQL install. How do I do that?
6 Answers
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Should I declare Jackson's ObjectMapper as a static field?
The Jackson library's ObjectMapper class seems to be thread safe .
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Does anyone have benchmarks (code & results) comparing performance of Android apps written in Xamari
...s that their Mono implementation on Android and their C# compiled apps are faster than Java code. Did anyone perform actual benchmarks on very similar Java and C# code on different Android platforms to verify such claims, could post the code and results?
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Build Eclipse Java Project from Command Line
Is there a way to compile an Eclipse-based Java project from the command line?
8 Answers
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How to initialize log4j properly?
After adding log4j to my application I get the following output every time I execute my application:
24 Answers
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How to check if an object is a list or tuple (but not string)?
... tuple - but not a str . Because many times I stumbled upon bugs where a function passes a str object by mistake, and the target function does for x in lst assuming that lst is actually a list or tuple .
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Do c++11 lambdas capture variables they don't use?
...red by value in a lambda, will that result in all local variables in the function being copied, or just all local variables that are used by the lambda ?
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What is a good pattern for using a Global Mutex in C#?
...t:
using System.Runtime.InteropServices; //GuidAttribute
using System.Reflection; //Assembly
using System.Threading; //Mutex
using System.Security.AccessControl; //MutexAccessRule
using System.Security.Principal; //SecurityIdentifier
static void Main(stri...