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digitalmars.D - static dictionary initialization

reply Tyro <Tyro_member pathlink.com> writes:
What is the correct way to statically initialize a dictionary?
I thought something like this would work but as you can see, it does not.

static uint[char[]] matrix =
[
"A2000", "A2001", "A2002", "A2003", "A2004", "A2005", "A2006", "A2007", "A2008",
"A2009",
"A2010", "A2011", "A2012", "A2013", "A2014", "A2015", "A2016", "A2017", "A2018",
"A2019",
"A2020", "A2021", "A2022", "A2023", "A2024", "A2025", "A2026", "A2027", "A2028",
"A2029",
"A2030", "A2031", "A2032", "A2033", "A2034", "A2035", "A2036", "A2037", "A2038",
"A2039",
"A2040", "A2041", "A2042", "A2043", "A2044", "A2045", "A2046", "A2047", "A2048",
"A2049",
"A2050", "A2051", "A2052", "A2053", "A2054", "A2055", "A2056", "A2057", "A2058",
"A2059",
"A2060", "A2061", "A2062", "A2063", "A2064", "A2065", "A2066", "A2067", "A2068",
"A2069",
"A2070", "A2071", "A2072", "A2073", "A2074", "A2075", "A2076", "A2077", "A2078",
"A2079",
"A2080", "A2081", "A2082", "A2083", "A2084", "A2085", "A2086", "A2087", "A2088",
"A2089",
"A2090", "A2091", "A2092", "A2093", "A2094", "A2095", "A2096", "A2097", "A2098",
"A2099"
];


Thanks,
Andrew
Nov 29 2004
parent reply Stewart Gordon <smjg_1998 yahoo.com> writes:
Tyro wrote:
 What is the correct way to statically initialize a dictionary?

There isn't one. It's been brought up a few times: D/26695 Meanwhile, you're stuck with populating it manually. You can use a static this() function to do this.
 I thought something like this would work but as you can see, it does not.
 
 static uint[char[]] matrix =
 [
 "A2000", "A2001", "A2002", "A2003", "A2004", "A2005", "A2006", "A2007",
"A2008",
 "A2009",

Of course it doesn't. An AA needs two items of data for each entry: a key and a value. By the looks of it, you've only given it the keys. Stewart. -- My e-mail is valid but not my primary mailbox. Please keep replies on the 'group where everyone may benefit.
Nov 29 2004
parent =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb algonet.se> writes:
Stewart Gordon wrote:

 I thought something like this would work but as you can see, it does not.

 static uint[char[]] matrix =
 [
 "A2000", "A2001", "A2002", "A2003", "A2004", "A2005", "A2006", 
 "A2007", "A2008",
 "A2009",

<snip> Of course it doesn't. An AA needs two items of data for each entry: a key and a value. By the looks of it, you've only given it the keys.

If there *was* a way to initialize it, what would it look like ? Something like this, perhaps ?
 static uint[char[]] matrix =
 [
   "A2000" : 2000, "A2001" : 2001, "A2002" : 2002
 ];

That would make it consistent with dynamic arrays and structs... Not sure what the hash representation looks like "behind the scenes", maybe the D compiler even has to generate code to do the above init ? --anders
Nov 29 2004