This is a list of all the code snippets I share for programming tips & tricks daily on my Twitter: https://twitter.com/Atif_ShoukatAli

$SNIPPETS.md

All the snippets below are in the order of posting. Hope these little gems help someone learn 😊

Happy Hacking 🐱‍💻

1-rust-hello-world.rs

// #1 - Rust Hello World!

fn main() {
    // this is the entry point for the compiled binary

    // print to console
    println!("Hello World!");
}

10-python-list-for-iterate.py

# #10 - Python List For Iteration!

# create a list to iterate over
list = [1, 2, 3, 4, 5]

# note the 'in' keyword
# also the iteration is in order
for i in list:
  print(i)

11-c-do-while-loop.c

// #11 - C do-while loop!

// declare a condition variable
int a = 5;

// do stuff until condition false
do {
  // do something here
  printf("%d\n", a);
  // change the condition variable
  a--;
}while( a > 0 );

12-python-dictionary-for-iterate.py

# create a dictionary with some world capitals
# country is 'key' and capital is 'value'
countryAndCapital = {
 'Canada' : 'Ottawa',
 'Spain' : 'Madrid',
 'Austria' : 'Vienna',
 'Switzerland' : 'Bern',
}

# iterate over the keys here
# note this will be unordered!
for country in countryAndCapital:
  print(country + ': ' + countryAndCapital[country])

13-java-print-formatted-string.java

// #13 - Java Print Formatted String!

// using string formatter & print
String output = String.format("%s has %d days.", "January", 31);
System.out.print(output);

// using just printf
System.out.printf(" And %s has %d days.", "April", 30);

14-go-if-else.go

// #14 - Golang If-else Statement!

// declare something to test on
num := 10
// 'if' is always the first condition checked
if num == 0 {
  fmt.Println("number is zero!")
} else if num > 0 {
  fmt.Println(num, "is positive!")
} else { 
  // if everything else is false this executes
  fmt.Println(num, "is negative!")
}

15-javascript-for-each.js

// #15 - JavaScript For-Each!

// declare an array to iterate over
const elements = ['these', 'are', 'the', 'elements'];
// iterate over the individual array elements
elements.forEach(element => console.log(element));

16-python-function.py

# #16 - Python Function!

# define the function here
# 'a' & 'b' are the parameters
def add(a, b):
  # do the calculations here
  total = a + b
  # return the result at the end
  return total

# call the function
# '10' & '22' are the arguments
sum = add(10, 22)
# show the result
print(sum)

17-rust-formatted-string.rs

// #17 - Rust Formatted String!

fn main() {
    // this is the entry point for the compiled binary

    // print the formatted string
    println!("{} is {} years old and loves playing {}.", 
      name = "Michael",  age = "22", hobby = "tennis"
    );
}

18-cpp-arrays.cpp

// 18 - C++ Arrays!

// uninitialized int array of size 5
int array1[5];
// initialized int array of size 5 with 0s
int array2[5] = {};
// semi-initialized int array of size 5
int array3[5] = {1, 2, 3};
// fully-initialized int array of size 5
int array4[5] = {1, 2, 3, 4, 5};
// fully-initialized int array of size 5
int array5[] = {5, 4, 3, 2, 1};

19-go-map.go

// #19 - Golang Map!

// make a map of string -> string
m := make(map[string]string)
// fill in some elements
m["name"] = "Matt"
m["city"] = "Chicago"
m["country"] = "USA"
// check the content of the whole map
fmt.Println(m)

2-python-list-access.py

# #2 - Python List Access!

# create the list
list = ["This", "is", "a", "list", "of", "some", "elements"]

# access individual elements
first = list[0]         # "This"
last = list[-1]         # "elements"
second = list[1]        # "is"
secondLast = list[-2]   # "some"
fifth = list[4]         # "of"

3-javascript-for-loop.js

// #3 - JavaScript For Loop!

// loop 10 times - note the start is at 0!
for (let i = 0; i < 10; i++) {
  // print the iteration values 0 through 9
  console.log('iteration# ' + i);
}

4-cpp-pointer.cpp

// #4 - C++ Pointer!

// main function where the program enters at
int main() {
    // initialize a null pointer using the * operator
    // after the type of the variable it points to
    int* p = nullptr;
    // initialize a variable of the type 
    // you want to point to
    int i = 5;
    // use the & operator to assign the address 
    // of the variable to pointer
    p = &i;
    // dereference using the * operator before the pointer 
    // variable to retrieve the value it points to
    int j = *p;
    
    return 0;
}

5-go-switch-case.go

// #5 - Golang Switch Case!

// value of fruit determines which 
// switch-case branch to execute
fruit := "apple"
fmt.Print("The fruit is: ")

switch fruit {
case "apple":
  fmt.Println("🍎")
case "orange":
  fmt.Println("🍊")
case "mango":
  fmt.Println("🥭")
// default case for everything else
default:
  fmt.Println("something else!")  
}

6-c-while-loop.c

// #6 - C while loop!

// initialize the conditions
int i = 10;
printf("Ready for takeoff...🔥\n");
// conditional statement
while ( i > 0 )
{
  // do something here
  printf("%d...\n", i);
  // change the conditions here
  i--;
}
printf("Liftoff!!🚀");

7-java-if-else.java

// #7 - Java If-Else!

int number = 10;

// check the number and print accordingly 
if (number > 0) {
  // first conditional check with if
  System.out.println("Number is +ve");
} else if (number == 0) {
  // check any other conditions with else if
  System.out.println("Number is 0");
} else {
  // if all else above is false this executes
  System.out.println("Number is -ve");
}

8-python-dictionary-access.py

// #8 - Python Dictionary Access!

# create the dictionary
person = {
  "name": "Max",
  "age": 29,
  "occupation": "Programmer",
  "location": "Canada"
}

# access the dictionary element with []
pName = person["name"]

9-c-enum.c

// #9 - C Enumeration!

// declare an enum for days in a week
// note the index starts at '0' by default
enum day{Mon, Tue, Wed, Thur, Fri, Sat, Sun};

// declare variable today of enum type day
enum day today;

// assign it Tuesday!
today = Tue;