000 - One Hundred Days of Code
This collection of coding tips and tricks likely will be miscellaneous both in languages and content featured.
Round 000
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Bash Date Calculations
Hacking time within the Bash shell
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Bash Padding Strings
Pad string in Bash with zeros
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JavaScript Padding Strings
Zero padding values with JavaScript
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JavaScript Date Calculations
Hacking time with JavaScript
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Awk Space Replace and Lowercase
String mutation Awk examples
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Bash Multi-Line Variables
Assigning and appending to multi-line variable with Bash
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JavaScript Boolean Gotchas
trueis coerced to a number but"true"is not -
Bash Branching Without If
if,then, andfican be optional whenelifis not used -
JavaScript Coerce Values
Convert strings to JavaScript Object types where available
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Bash STDOUT to Array
Saving output of a command to an array
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HTML Text Direction
Individual HTML elements can define text direction
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Git Targeted Undo
Turning back time with Git
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NodeJS Absolute Path
RegExp incantations for building absolute directory/file paths
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Bash Case Changing Built-ins
Lower or upper case strings with Bash built-ins
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Awk Floating Point Calculator
Dependency free floating point math from the command-line
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Bash Error Trapping
Example of catching/inspecting Bash error states
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JavaScript Reduce Key Value Pares
Example of
reduceon objectentriesfor uniq key value pares -
Bash Divide By Zero Gotcha
localprevents trapping errors -
Python Argument List and Named Parameters
Example of accepting argument list before keyword parameters
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JavaScript Convert Decimal to Another Base
Using
toString()and Bitwise operators to convert numbers -
Awk float comparison hack for Bash
By default Bash does not support floating point number comparisons
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JavaScript `String.indexOf()` tricks
String.indexOf()returns first index of target character(s) within a string -
CSS counter and checkbox gotcha
counter-incrementreverts if checkbox state reverts -
Bash Command Redirection
Example of passing commands to another account
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JavaScript Holey Arrays
Example of sanitizing empty slots
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Awk RegExp variable
Example of matching Regular Expression defined by variable
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Bash `if` RegExp
Example of Regular Expression branching/matching
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JavaScript 2D Element Matrix
An example of using
Array(_n_).fill()andArray.map() -
Awk calling shell executable
Example of calling
lsand reading STDOUT within Awk script -
JavaScript Type Inspection
Function that demonstrates some messy bits of JavaScript types
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Bash range tip
The
{_start_.._end_}syntax works in places other thanforloops -
JavaScript `async` callback example
Both
Array.map()andArray.forEach()methods are Asynchronous compatible -
Awk argument parsing
Example of parsing arguments within Awk script
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Python publishing `entry_points` gotcha
entry_points["console_scripts"]are imported by installed scripts -
Git hooks on push
Bash script that runs Git hooks on push
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JavaScript Fibonacci Tail Recursion
Example calculating Fibonacci sequence using tail recursion
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Bash send SSH commands
Example of using heredoc to send multiple commands to remote host
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Python from Math Function
Example of translating Math function to Python syntax
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JavaScript `this` quiz
Quick example of
thisscope and one big gotcha -
Python from Math summation
Example of translating Math summation to Python syntax
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Bash Pattern Matching
Example of replacing characters that are not of numeric or alphabet class
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JavaScript Ternary Operator
Example of conditional (ternary) operator within template literal
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Awk Last Column
Example of obtaining and using last column Awk variable
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JavaScript Fibonacci Generator
Example of using
yieldwithin a function to generate Fibonacci sequence -
Bash File Name Pattern Match
Example of extracting a file name with Pattern Match built-ins within Bash
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Awk Sorted Unique Count
Using an Awk array (map) to sort and count unique lines or columns
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Python Modulo Example
How to check if integer is even
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JavaScript Decimal Conversion Challenge
Coding challenge, convert Decimal integer to another base
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Bash Parameter Transformation
Example of using Bash Parameter Transformation options to prevent expansion
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Awk `gsub` `FILENAME`
Example of using
gsubfunction onFILENAMEto count post languages -
JavaScript Array Filter
Example of filtering an Array for odd or even numbers
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Bash next post
Function that prints the index for new post file
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Awk average column script
Example of using ternary operator to default undefined variables
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JavaScript objectify cookies
Function that converts browser cookie string into JavaScript Object
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Bash read file lines
Example of reading lines from a file without the
catcommand -
Python custom class
Example of a custom Python class with inheritance
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Awk title case
Example script that title cases all words in string
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HTML `oninput` Event
Example HTML and JavaScript for
oninputevent -
JavaScript `for` loop callback
Example of using callbacks within
forloop iteration -
Bash string splitting trick
Example of using find and replace Bash built-ins on variables
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Awk Find combo
Example of combining
awkandfindcommand-line utilities -
Three code publishing tips
Examples of how to separate the responsibilities of a project
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Awk builtin linter
Examples of using the builtin linter within Awk from GNU
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Python division gotcha
Examples of float vs integer division
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HTML select option
Example of using
selectandoptionHTML elements and specific attributes -
Awk prefix input stream
Script that conditionally prefixes input stream
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JavaScript character array
Example of using Spread Syntax in JavaScript to build character arrays
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HTML5 subtitles
Example of using
trackandvideoHTML5 elements -
Awk language counting script
Example of using Awk to print statistics about posts published
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Python exception defaulting
Example of handling specific exception type and defaulting
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Vim spelling shortcuts
Vim script plugin example
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Bash join array
Function to join Bash array/list
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Liquid comment gotcha
Warning
captureblocks will interpret code withincomments -
Vim script file type detection
Example of utilizing
&filetypeto detect specific file type -
Awk match between separator
Example of using
indexandsubstrfunctions to extract between separator -
Python generator example
Example of using
yieldwithin a function -
Vim plugin writing tips
Examples and tips on writing and installing Vim plugin
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JavaScript character counting function
Example of using
Array.reduce()to count characters in a string -
Sass array gotchas
Array index addresses start at
1not0 -
CSS Unicode
::beforeand::afterpseudo elements may contain Unicode -
Liquid empty array
Example of how to initialize and append to an empty Liquid list
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Awk average select columns
Example of Awk column selection by variable
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Vim script arbitrary arguments
Example Vim script function that accepts arbitrary number of arguments
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Bash string filters
Examples of using Bash built-ins for filtering before or after a pattern
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Vim script catch specific exception
Example of re-throwing all but a specific exception type
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Python file iterator
Example function for iterating over lines of a file
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Bash enable Vi mode
How to enable Vi shortcuts within Bash shell
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Python list comprehension
Example of using Python list comprehension to calculate factors of integer
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JavaScript string to Unicode
Example of using spread syntax and
Array().map()for string conversion -
Liquid `where` filter
Example of using
whereLiquid filter on a collection -
Awk array sorting
Example of using Awk built-ins for sorting columns
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Python integer division
Example of using
//operator instead ofmath.floor()method -
Bash `select` options
Example of using
selectfrom list of options -
Vim auto-close braces
VimRC example for automatically closing braces/brackets
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Python doc-strings
Examples of defining and accessing Python documentation
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Vim move selection
Vim configurations to move visual selection up or down
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JavaScript multidimensional matrix
Function for generating multidimensional matrices
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Rust implement custom addition
Example of implementing math for custom data structure
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Bash brace expansion
Examples of using Bash brace expansion for command-line operations
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Vim jump splits
Vim configurations to jump between splits swiftly
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End of first round
Review of first round learnings from 100 Days of Code challenge