One, two, or three equals signs can mean very different things in source code. JavaScript makes the contrast especially visible with assignment, loose equality, and strict equality.
Read more →Shift ⇧ is a temporary modifier; Caps Lock ⇪ changes a persistent keyboard state. Both can produce capital letters, but they behave very differently with symbols and shortcuts.
Read more →Option ⌥ is the Mac modifier; on a Windows-style keyboard connected to a Mac, Alt commonly fills that role. The shortcut behavior still belongs to macOS and the…
Read more →Command ⌘ and Control ⌃ are separate modifier keys on a Mac. They sometimes correspond to familiar Windows shortcuts, but they are not interchangeable.
Read more →In ordinary left-to-right text, Backspace deletes backward and forward Delete deletes ahead of the cursor. Apple keyboards complicate the naming by calling the delete-left key Delete.
Read more →Enter and Return are usually two names for the main confirmation key, but a keypad Enter can have a separate physical identity that software can detect.
Read more →Square root √ and check mark ✓ can look deceptively similar. Learn their Unicode identities, how radicals are laid out, and why √9 means the principal square root.
Read more →The dedicated minus sign − and ASCII hyphen-minus - can both appear in formulas, but they are separate Unicode characters with different typographic and technical roles.
Read more →Learn the difference between ÷, the ASCII slash /, mathematical division slash ∕, and fraction slash ⁄, including Unicode’s special fraction-sequence behavior.
Read more →The multiplication sign ×, letter x, and ASCII asterisk * can all appear in multiplication contexts, but they are different Unicode characters with different roles.
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