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Posts by hkotsubo
In Git documentation, there are lots of references to the term "HEAD". But what exactly is it? Some places refer to it as "a pointer to the current branch". So it's a branch? What is it used for?
First, we need to understand what a Git repository actually is. For that, refer to this article: it explains that a Git repository is actually a DAG (Directed Acyclic Graph). I'm not going into the...
First, let's see how Zalgo Text works. Unicode Combining Characters Unicode defines the concept of combining characters. Basically, some characters can be combined with others, to "make/create"...
It makes difference if the script is being imported. Let's suppose I have a file my_file.py: # my_file.py def some_function(): print('do some stuff') print('calling function:') some_fun...
I think a branch is a set of commits Well, technically no, it's not. But first things first. DAG (Directed Acyclic Graph) Personally, Git became much more easier to understand after I've r...
When you use the variable without any format specifier (print(f'{variable}')), internally its __str__ method is called. Considering your Test class, it already has this method: class Test: def...
A Zalgo Text is something like this: T̃͟͏̧̟͓̯̘͓͙͔o̤̫͋ͯͫ̂ ̥͍̫̻͚̦͖͇̌ͪ̇ͤ̑̐͋̾̕i̢͖̩͙͐͑ͬ̄̿̍̚ͅn̵̢̼̙̳̒̄ͥ̋̐v̡̟̗̹̻̜͕̲ͣ̐ͤͤ͒́oͫ͂̆͑ͩ҉͇̰͚̹̠̫͔̗k̷̭̬̭͙̹̺̯ͩ̌̾̒̋̓ͤ͛͘͠e̥͙̓̄̕ ̵̫͈ͪţ̱̺̺̑̿̉̌͛̂̇h͙̣̬̓̂͞ę̡̲̟͎͉̟͛̓̉̆̉͘ ͬ̒...
The complete set of characters matched by the \s shorthand varies according to the language/API/tool/engine you're using. In addition to that, there might be configurations that change this behavi...
It depends. Do you want to have autocomplete on the shell the program runs in, or do you want the program to intercept the TAB key and do the autocomplete by itself? Shell autocomplete If you'r...
How do I clone the repository with only part of the history? It depends on what part you want. It's possible to have shallow clones (which is exactly what you need, only a part of the commit h...
I've seen some regular expressions (regex) using \s when they want to match a space, but I noticed that it also matches line breaks. Example: the regex [a-z]\s[0-9] (lowercase ASCII letter, follow...
When you do x=y=z=[], you're making x, y and z point to the same list. Example: x=y=z=[] # add element to x x.append(1) # add element to y y.append(2) # but x, y and z all point to the same l...
tl;dr Although it can be done with regex (and work for "most" cases), I still prefer to use a parser. Long answer I'd use something such as DOMParser to do the job: let validTags = ['p', 'span', 'b...
What you're asking is a very broad topic, and it'd require entire books to cover everything. For the sake of simplicify, I'll just stick to the basics. Inheritance Inheritance can be explai...
In Bash, IFS is an internal variable and it stands for "Internal Field Separator" <- according to this link, it "determines how Bash recognizes fields, or word boundaries, when it interprets cha...
First of all, let's understand why your regex didn't work. The first part is \w+\.\s, which is "one or more alpha-numeric characters" (\w+), followed by a dot and a space (\.\s). If the regex was ...
When I want to print a number or a string, I can use f-strings (Python >= 3.6) or str.format, and I can use just the variable between braces, or use format specifiers. Ex: num, text = 10, 'abc' ...
There are many ways to do it, it depends on what data you already have and/or the Java version. I have only the year's numeric value If you already have a value as a number (int or long), and i...
By "deeply clone", I assume you mean "also make copies of whatever nested structures the object might have". And for those, I guess libraries like Lodash are more reliable and appropriate if you wa...
Given the link where the code comes from (based on your other question), this is just a, let's say, "free-form/pseudo-code/documentation example". It's not a valid JavaScript code. It's more like...
I've got this sample regex: Pattern p = Pattern.compile("(?:([aeiou]+)[0-9]+|([123]+)[a-z]+)\\W+"); It basically has the following parts: one or more lowercase vowels ([aeiou]+), followed by one ...
First of all, I've added a print in your code to show the dates: if days % 7 == 0 and current_day == 1: print(f'{current_year}-{current_month:>02}-{current_day:>02}') sundays += 1 ...
what ways can I get a string's length in D? There are many different ways, and that will depend on the content of the strings, their types, and how you define the terms "character" and "length...
The standard for multi-line text input is to use a textarea. Don't use input type="text", it won't work. I'm not sure why you don't want to use a textarea, but after reading this answer, I hope you...
According to this answer, Codidact uses highlight.js for syntax highlight, and "support whatever languages are enabled by default in that package". And according to this table (in highlight.js Git...
