Community Digest |
Top new questions this week: |
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Why does JavaScript use autoboxing?JavaScript has a handful of primitive types such as strings and numbers. However, when doing something fancy, it often wraps these types inside temporary objects in order to use object methods, a ...
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Is there something better than async in order to avoid dead or unused processing times in single thread?I recently read about PHP's true async RFC. The initial real life "picture" (unrelated to PHP or sync processing) that I imagined was a waiter in a restaurant. He/She/It works async, taking ...
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Greatest hits from previous weeks: |
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Why do many template languages have `for-else` statements?I've noticed that many template engines have a mechanism for detecting that a loop is not occurring. Although their names and syntax vary, they all have this similar structure. For example: Jinja <...
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The square bracket dance: declaring an array in Go, Java, C++ makes the bracket [] going from the left to right. What are the underlying motives?I've learned multiple languages during my developer life. When I'm switching from one to another, I'm falling in plenty of "small things to remember". Some have a reason I'm knowing, but ...
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Why do some languages have both immutable "variables" and constants?Some programming languages (Rust is one I can think of off the top of my head) provides mechanisms to have immutable variables but they also have constants. Isn't an immutable variable just a constant?...
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What are the pros and cons of having a unit type over C-like void?Unit types are types found in more modern languages, replacing void in the C-family languages. Unlike void, a unit type has an ...
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Why would accessing uninitialized memory necessarily be undefined behavior?In C, accessing any indeterminate/uninitialized memory is undefined behavior, period. Even in the case that the type in question is guaranteed to have no trap representations, such as ...
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Why can C not be lexed without resolving identifiers?I’ve seen it said before that C and C++ cannot be lexed without resolving identifiers to an extent. A common example is (a)*b, which could be either multiplication <...
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Does Python's semicolon statement ending feature have any unique use?Python does not usually use explicit line-ending characters; the parser can almost always figure out where a statement ends from the positioning of newlines. However, Python's syntax allows you to use ...
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