dukenmarga

Valid Reason to Start Structural Analysis Software Project Using Fortran

1. Trivial
  - It has nice printing formatting by default
  - Less keywords to memorize
  - Long life since 1966 and will be keep alive by using modern standard
  - Compiled and fast

2. Numerical Reason
  - Supports matrix operation in simple terms compared to C/C++

dukenmarga

Generate Random String

Source

# Method 1: md5 Hash
echo $RANDOM | md5sum | head -c 20; echo;
996e405cb0cdd2e10299

# Method 2: UUID
cat /proc/sys/kernel/random/uuid | sed 's/[-]//g' | head -c 20; echo;
c23174ce6fa149498fc7

dukenmarga

Initialise a repository

git init

Basic

# Add
git add somefile.py

dukenmarga

Runtime Error

Runtime error is when you see the error in the browser development (web) console.

TypeError: Cannot read properties of undefined

Cannot read properties of undefined (reading 'length')

TypeError: Cannot read properties of undefined (reading 'length')
at Module.each (/node_modules/svelte/internal/index.mjs:1735:31)

dukenmarga

# Code untuk soal BMG
# Tes Logika
# By Duken Marga

LIMIT = 50

for i in range(LIMIT+1):
    # Ignore 0
    if i == 0:
        continue

dukenmarga

Create network
$ docker network create redis

Run a docker and connect to specific network exposed in Port 16379
$ docker run --name redis-docker --network redis --detach --publish 16379:6379 redis:latest redis-server

Run interactive
$ docker run -it --network redis --rm redis:latest redis-cli -h redis-docker

Build an image

dukenmarga

# in search of pi=3.14...
# by using random of total dots generated outside or inside a circle

import numpy as np
import math

# number of iteration
n = 10000000

inside = 0

dukenmarga

#include <stdio.h>
 
int main(){
        char c[5] = "23452";
        char d[5] = "23452";
        int result=0, factor=3;
        int numeric;
 
        // take and convert 1 character from an array
        numeric = c[2] - '0'; // --> 4

dukenmarga

$ git commit ...              (1)
$ git reset --soft HEAD~1     (2)
$ edit                        (3)
$ git add ....                (4)
$ git commit -c ORIG_HEAD     (5)

Undoing a commit is a little scary if you don't know how it works. But it's actually amazingly easy if you do understand.

Say you have this, where C is your HEAD and (F) is the state of your files.

dukenmarga

# modified from https://gist.github.com/tebeka/5426211
# updated to work with Python 3

import matplotlib
matplotlib.use('Agg')
from matplotlib import pyplot
import numpy
import cherrypy
from io import BytesIO
import base64