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September 23, 2014 [Issue 13522] Let's use '_' underscore as official ignore value | ||||
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https://issues.dlang.org/show_bug.cgi?id=13522 bearophile_hugs@eml.cc changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bearophile_hugs@eml.cc --- Comment #1 from bearophile_hugs@eml.cc --- I've added my vote. Once "_" means "ignored" (and it has become a name that can't be read), you can allow code like this where "_" is used more than once: foreach (_; 0 .. 5) foreach (_; 0 .. 5) {} foo((a, _, _) => a); // some kind of tuple destructuring syntax: @{a, b, _} = myTup; Other potentially important usages of the "ignored" value are for pattern matching "ignored" wild-card. -- |
September 23, 2014 [Issue 13522] Let's use '_' underscore as official ignore value | ||||
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https://issues.dlang.org/show_bug.cgi?id=13522 Ketmar Dark <ketmar@ketmar.no-ip.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ketmar@ketmar.no-ip.org --- Comment #2 from Ketmar Dark <ketmar@ketmar.no-ip.org> --- one of my so-much-universally-hated ;-) patches does exactly this (but for '__' args — two underscores) for foreach args and lambda args (maybe function args too, i don't remember). it's such an amusement to see people requesting same things again and again. as for 'foreach', this should be allowed too: `foreach (; 0..42)`. i'm using this for some time now and found it very handy. -- |
September 23, 2014 [Issue 13522] Let's use '_' underscore as official ignore value | ||||
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https://issues.dlang.org/show_bug.cgi?id=13522 Ketmar Dark <ketmar@ketmar.no-ip.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC|ketmar@ketmar.no-ip.org | -- |
September 26, 2014 [Issue 13522] Let's use '_' underscore as official ignore value | ||||
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https://issues.dlang.org/show_bug.cgi?id=13522 hsteoh@quickfur.ath.cx changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hsteoh@quickfur.ath.cx --- Comment #3 from hsteoh@quickfur.ath.cx --- Would this cause interop problems with C programs that use GNU gettext, which conventionally defines '_' to be shorthand for 'gettext'? (Not that I care about such an ugly C hack, but you never know, somebody might care.) -- |
September 26, 2014 [Issue 13522] Let's use '_' underscore as official ignore value | ||||
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https://issues.dlang.org/show_bug.cgi?id=13522 Ketmar Dark <ketmar@ketmar.no-ip.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ketmar@ketmar.no-ip.org --- Comment #4 from Ketmar Dark <ketmar@ketmar.no-ip.org> --- it shouldn't, but we can use two underscores for that. ids started with two underscores are reserved anyway. -- |
October 25, 2014 [Issue 13522] Let's use '_' underscore as official ignore value | ||||
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https://issues.dlang.org/show_bug.cgi?id=13522 --- Comment #5 from bearophile_hugs@eml.cc --- There are plans to totally disallow the use of "_" as variable name in Java: http://openjdk.java.net/jeps/213 >In addition, using underscore ("_") as an identifier, which generates a warning as of Java SE 8, should be turned into an error in Java SE 9.< -- |
July 08, 2015 [Issue 13522] Let's use '_' underscore as official ignore value | ||||
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https://issues.dlang.org/show_bug.cgi?id=13522 --- Comment #6 from Martin Nowak <code@dawg.eu> --- There is precedence for this usage in python, haskell and scala. -- |
June 07, 2019 [Issue 13522] Let's use '_' underscore as official ignore value | ||||
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https://issues.dlang.org/show_bug.cgi?id=13522 Les De Ridder <dlang@lesderid.net> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dlang@lesderid.net -- |
December 17, 2022 [Issue 13522] Let's use '_' underscore as official ignore value | ||||
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https://issues.dlang.org/show_bug.cgi?id=13522 Iain Buclaw <ibuclaw@gdcproject.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P1 |P4 -- |
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