Several Ways to Stop Goroutine in Go. A signal channel Typically, you pass the goroutine a (possibly separate) signal channel. That signal channel is used to push a value into when you want the goroutine to stop. The goroutine polls that channel reg...

Working with Constants and iota in Go. The Constant Generator iota Here’s an example from the time package, which defines named constants of type Weekday for the days of the week, starting with zero for Sunday. Types of this kind are often called en...

Calculate degrees celcius from farenheit in Go. Following program shows you how to convert fahrenheit to celsius. The function FToC below encapsu- lates the temperature conversion logic so that it is defined only once but may be used from multiple p...

In Rust, there are 2 ways to sort a vector. Using sort Method The sort(&mut self) method sorts the slice. This sort is stable (i.e., does not reorder equal elements) and O(n * log(n)) worst-case. For example, fn main() { let mut v = [3, -5, ...

In Python, there are 2 ways to retrieve a module's path. Using __file__ Attribute You can retrieve a module's path using the __file__ attribute. For example, #!/usr/bin/python3 # Import module import os print(os.__file__) /usr/local/lib/pyt...

In Rust, there are 2 ways to raise a number to a power. Using pow Method The pow() function raises a value to the power of exp, using exponentiation by squaring. Note that 0⁰ (pow(0, 0)) returns 1. Mathematically this is undefined. See the followi...

In Python, there are 4 ways to copy a dictionary. Using dict Method If you want to copy the dict, you have to do so explicitly with: #!/usr/bin/python3 a = {"a": 1, "b": 2} # Copy b = dict(a) b['a'] = 3 print(a) print(b) {'a': 1, 'b': 2} {'...

In Python, there are 2 ways to determine if an object is iterable. Using Duck Typing Duck typing is a concept related to dynamic typing, where the type or the class of an object is less important than the methods it defines. When you use duck typing...

In Golang, using the len function is the easiest way to count the items in the map structure. Using len Function The built-in function len take arguments of various types and return a result of type int. The implementation guarantees that the result...

In Golang, there are 2 ways to get the maximum value for an int type. Using constant values Since integer types use two's complement arithmetic, you can infer the min/max constant values for int and uint. For example, package main import ( "...

In Golang, there are 3 ways to check the equality of two slices. Using bytes.Equal Function Equal reports whether a and b are the same length and contain the same bytes. A nil argument is equivalent to an empty slice. For example, package main...

In Golang, there are 2 ways to remove duplicates strings from slice.Using a Hash Map We have defined a function where we are passing the slice values and using the map function we are checking the duplicates and removing them. The ones that are curr...

2 ways to check if a map is empty in Golang.Using len Function You can use the len function to check if a map is empty. it returns the length of v, according to its type. len(s) map[K]T: map length (number of defined keys) package main import "fmt"...

Splitting a String into a Slice in Golang.Using strings.Split Function Use the strings.Split function to split a string into its comma separated values. package main import ( "fmt" "strings" ) func main() { s := "Japan,Germany" // func S...

Correct way to define Python source code encoding.PEP 263 Python will default to ASCII as standard encoding if no other encoding hints are given. PEP 263 defines how to declare Python source code encoding. Using Coding To define a source code encodin...