Blog - kimserey lam

Sep 24, 2021

Decorators In Python

In Python, we can add extra functionalities to existing functions with decorators but this comes with small gotchhas. The functools module comes with a special wraps decorator which addresses those issues. In today’s post we will look at how to use wraps with example.

Sep 17, 2021

Function Overload In Python With Single Dispatch

Python supports overloading functions via single dispatch. With single dispatch we can define multiple implementations of a function and have it chosen based on a single argument. In this post we will look at how single dispatch works with example.

Sep 10, 2021

Partial Function Application In Python

Partial function application is a useful tool to reduce the signature of a function by fixing the first arguments which then result in a new function with the remaining arguments. In this post, we will see when partial application is useful in Python and how we can implement it.

Sep 03, 2021

Depth First Seach And Breath First Search In Python

In Python, it is very easy to implement depth first search (DFS) and breath first search (BFS) algorithms using the built in data types and recursion. In today’s post, we will look at some different flavours of DFS and BFS together with examples where they are used.

Aug 27, 2021

Random Module In Python

The random module in Python provides a way to generate pseudo-random numbers for various distributions. In this post, we will explore the most commmonly used functionalities of the random module; generating random integers and selecting randomly from sequences.

Aug 20, 2021

Python Built In Functions

Python comes with a handful of built in functions provided by the standard library. In today’s post, we will look some of them which are very useful in day to day programming.

Aug 13, 2021

List Slicing In Python

Lists are one of the most versatile structures in Python. They allow us to keep lists elements which can be of different types and access them by index with constant time complexity. One of the best features of lists in Python is the slicing mechanism.

Aug 06, 2021

Python Priority Queue

Priority queues are useful to keep track of smallest elements in Python. A typical example would be to keep track of the smallest elements of a collection, for example first, second, third elements, we can simply keep popping out of the priority queue to get them. Python comes with a built in pirority queue via the library heapq. In today’s post, we will look at the main functionalities of heapq with examples.

Jul 30, 2021

Python Dictionary

Python dictionary is a structure that can be used to store key/value data with constant time for access. Dictionary structures in Python are very versatile which makes them popular and we can see them being used in many projects. They allow us to store keys and values of different types, provide us ways to iterate over the keys or values and have different ways to delete values. In today’s post, we will explore all the functionalities of dictionaries in Python.

Jul 23, 2021

Python Class Attribute Versus Instance Attribute

In Python, we can define variables on the class level or the instance level. In today’s post we will look at the differences in behavior.

Jul 16, 2021

Pointers To Functions In C

Last week we covered the basics of C pointers with their definitions and how to use them in variables and functions. In today’s post we will look at pointers to function and more specificities around pointers like NULL pointer or void return.

Jul 09, 2021

Pointers In C

Pointers are variables containing addresses of other variables. In C, pointers are used in many scenarios where they improve the code readability or where they are just necessary. In this post, we’ll explore what C pointers represent, how they can be used in functions, and explore the relationship between pointers and arrays.

Jul 02, 2021

Visual Studio Code Shortcuts

I have been using Visual Studio Code for many years, starting from frontend development with Angular and React, then moving to work on Python and lately working on C# projects. Visual Studio Code has always been at the top of my favorite editor to use as it is very lightweight, responsive and fast. It’s quick to open files, quick to load projects, it has a clean and minimal interface and has a strong community. Over the years of using it, I realised that there are a couple of shortcuts that I keep using in repetition and that I found missing when using other IDE. In today’s post I’ll go through those keyboard shortcuts.

Jun 25, 2021

Two's Complement

Last week we looked at bitwise operators in Python. We briefly went through all of them without looking into how signed intergers were represented. In this post we will be looking at Two’s complement, Python’s way of storing signed integers, and finally answer the question of why ~9 = -10.

Jun 18, 2021

Bitwise Operators In Python

When working with cryptographic algorithm and hashes, it’s quite common to operate at the bit and byte level. For those situations, Python provides functionalities to convert int to byte and vice versa and bitwise operators to operate on bits. In today’s post we will look at the different bitwise operators available with examples.