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Questions tagged [dollar-sign]

Anything related to the dollar symbol `$` and its special meanings in programming. The dollar symbol is often used in various programming languages as a special symbol for various purposes.

Anything related to the dollar symbol $ and its special meanings in programming. The dollar symbol is often used in various programming languages as a special symbol for various purposes.

For example, the dollar symbol has special meaning in:

  • most flavors of regular expressions
  • PHP language
  • R language
  • some Basic dialects
  • BASH shell language
  • assembly language
  • makefiles language
  • TCL language
  • etc.
199 questions
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What is the dollar-sign prefix in function arguments used for in Julia?

When I searched about the '$' prefix in Julia, all I could find is that it is for string or expression interpolation. For example, here https://docs.julialang.org/en/v1/base/punctuation/. However, I have seen people' code like add_broadcast!($y_d,…
user2727768
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Currency Formatting Canadian English and French

I have a requirement to set the value based on the locale. I will get the locale either en_US or fr_FR String locale = object.getLocale(); // Then based on the locale I need to define the currency. The currency format I need is defined under. …
Some Java Guy
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What is the difference between webkit's `$$` return and jQuery `$` return?

If in a webkit browser like Chrome i do: $$('span'); I get a result that looks almost exactly the same as jQuery's: $('span'); If in the console I look for definition of $$ I get: bound: function () { return…
Naftali
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Why is $ allowed but $$, or <$> disallowed as an operator (FS0035) and what makes $ special?

$ is allowed in a custom operator, but if you try to use $$, <$> or for instance ~$% as operator name you will receive the following error: error FS0035: This construct is deprecated: '$' is not permitted as a character in operator names and is…
Abel
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Will using a preprocessor directive to define what a dollar sign represents cause any conflicts?

Can I use the following in C++?: #define $ cout int main(){ $<<"Hello World!\n"; return 0; } I'm wondering whether it will cause any conflicts.
Somnium
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Matplotlib Display Dollar Signs in Tick Labels (Strings)

I can't figure out how to display dollar signs in tick labels that are not numbers, but strings. Here's an example of what I mean: import matplotlib.pyplot as plt import numpy as np categories = ['$0-$10','$10-$20','$20-$30'] y_pos =…
Dance Party2
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Meaning of Dollar Sign & Curly Braces Containing Javascript Block Outside of HTML Script Tag

I'm currently reading 'Javascript Web Applications' (O'Reilly, Alex MacCaw) and very early on there's a code snippet which might appear to execute a JS function, within an HTML document, yet it is not enclosed by