According to the Racket documentation, there is no difference — there is only a convention to use [ and ] for cond clauses (and use your judgement for the rest, as far as I understand): The use of square brackets for cond clauses is a convention. In Racket, parentheses and square brackets are actually interchangeable, … Read more
The pair of braces forms a block, containing a list of statements. You need to use a return statement explicitly to make the function return something: (one) => { return oneTodo(one, action); // ^^^^^^ } If you omit the braces, the arrow function has a concise body, which consists solely of a single expression whose … Read more
They are used to put Attributes on classes or methods (or other stuff). That way, you can attach data to classes that should not be part of the actual class. You can read more on them here
To answer the question “is there any preference/difference”: Yes, there are as many preferences as there are opinions, but be careful whose preferences you adopt. As a best practice, it is advisable to write portable SQL if it doesn’t require any extra effort. For your specific sample, it is just as easy to write a … Read more
Or this pyparsing version: >>> from pyparsing import nestedExpr >>> txt = “{ { a } { b } { { { c } } } }” >>> >>> nestedExpr(‘{‘,’}’).parseString(txt).asList() [[[‘a’], [‘b’], [[[‘c’]]]]] >>>
When doing autocomplete, instead of just hitting ENTER, you can instead press the key combination “Shift + (” and it will autocomplete and add () all in the one.
Square brackets: [] Lists and indexing/lookup/slicing Lists: [], [1, 2, 3], [i**2 for i in range(5)] Indexing: ‘abc'[0] → ‘a’ Lookup: {0: 10}[0] → 10 Slicing: ‘abc'[:2] → ‘ab’ Parentheses: () (AKA “round brackets”) Tuples, order of operations, generator expressions, function calls and other syntax. Tuples: (), (1, 2, 3) Although tuples can be created … Read more
add this to your user keybindings file { “keys”: [“)”], “command”: “insert”, “args”: {“characters”: “)”}, “context”: [ { “key”: “setting.auto_match_enabled”, “operator”: “equal”, “operand”: true }, { “key”: “selection_empty”, “operator”: “equal”, “operand”: true, “match_all”: true }, { “key”: “following_text”, “operator”: “regex_contains”, “operand”: “^\\)”, “match_all”: true } ] } it will override the one keybinding that instead … Read more
For those of us, who want a vanilla vim: inoremap ” “”<left> inoremap ‘ ”<left> inoremap ( ()<left> inoremap [ []<left> inoremap { {}<left> inoremap {<CR> {<CR>}<ESC>O inoremap {;<CR> {<CR>};<ESC>O This autocomplete in insert mode, provided set paste is not set. Keep it in the vimrc to avoid typing it every time and when we … Read more