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types

How do I find numeric columns in Pandas?

by IT Nursery

Let’s say df is a pandas DataFrame. I would like to find all columns of numeric type. Something like: isNumeric = is_numeric(df) 12 … Read more

Tags pandas, python, types

How to declare a Fixed length Array in TypeScript

by IT Nursery

At the risk of demonstrating my lack of knowledge surrounding TypeScript types – I have the following question. When you make a type … Read more

Tags fixed-length-array, types, typescript

C++ auto keyword. Why is it magic?

by IT Nursery

From all the material I used to learn C++, auto has always been a weird storage duration specifier that didn’t serve any purpose. … Read more

Tags auto, c, c++11, types

In Objective-C, what is the equivalent of Java’s “instanceof” keyword?

by IT Nursery

I would like to check whether an object (e.g. someObject) is assignable (cast-able) to a variable of another type (e.g. SpecifiedType). In Java, … Read more

Tags casting, downcast, equality, objective-c, types

C# string reference type?

by IT Nursery

I know that “string” in C# is a reference type. This is on MSDN. However, this code doesn’t work as it should then: … Read more

Tags c, reference, string, types

How to concatenate columns in a Postgres SELECT?

by IT Nursery

I have two string columns a and b in a table foo. select a, b from foo returns values a and b. However, … Read more

Tags coalesce, concatenation, postgresql, sql, types

Which data type for latitude and longitude?

by IT Nursery

I am newbie to PostgreSQL and PostGIS. I want to store latitude and longitude values in PostgreSQL 9.1.1 database table. I will calculate … Read more

Tags latitude-longitude, postgis, postgresql, types

Where in memory are my variables stored in C?

by IT Nursery

By considering that the memory is divided into four segments: data, heap, stack, and code, where do global variables, static variables, constant data … Read more

Tags c, memory, memory-management, types

What’s the difference between size_t and int in C++?

by IT Nursery

In several C++ examples I see a use of the type size_t where I would have used a simple int. What’s the difference, … Read more

Tags c, int, types

How to get the type of a variable in MATLAB

by IT Nursery

Does MATLAB have a function/operator that indicates the type of a variable (similar to the typeof operator in JavaScript)? 6 Answers 6

Tags matlab, types, variables
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