Re: Can't pass data from filter to each
On Monday, 17 April 2017 at 10:02:22 UTC, Suliman wrote:
New question. Can I put result of filtering in itself without
creation of new variables like x:
auto x =
MySQLTablesRange.array.filter!(a=>a[0].coerce!string.canFind("_"));
No. filter is simply a wrapper around the source range, it does
not modify it.
As for the problems you are having with ranges seeming empty,
they are all due to the fact that the ResultRange in mysql-native
isn't designed to support such chaining of calls. It's probably
best to first exhaust a ResultRange and put it into an array.
Re: Can't pass data from filter to each
New question. Can I put result of filtering in itself without
creation of new variables like x:
auto x =
MySQLTablesRange.array.filter!(a=>a[0].coerce!string.canFind("_"));
Can't pass data from filter to each
I am writing lambda function. I need filter data at first step
and than do dome operation on them (for start simply print on the
screen. I wrote next code:
MySQLTablesRange.filter!(a=>a[0].coerce!string.canFind("_")).each!(a =>
to!int(a[0].coerce!string.split("_")[1]).writeln);
But it's seem that each do not handle any data. I tested if data
is corectly filtered and next code successfully print it's output.
auto t =
MySQLTablesRange.array.filter!(a=>a[0].coerce!string.canFind("_"));
t.each!(a=>a[0].coerce!string.writeln);
But what is wrong with first code?
