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Re: st: Unexpected end of file in mata.
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Unexpected end of file in mata.
Date
Thu, 23 Jan 2014 15:53:31 +0000
The first point here
- I am puzzled to see that mata accepts both (i=1) and (i==1). Because
it is that flexible?
- I don't understand why the command if (i = 1) { reassigns
automatically i = 1 even if i = 2. What is happening here?
can be peeled off. In fact, the question already hints at the answer.
i == 1
is, and is only, a test, whether i == 1, and the result is true or false.
i = 1
is, and is only, an assignment. Stata is happy with
if (i = 1)
which takes place in two steps
i = 1 (assignment)
if (i) (logical test).
If you start with
i = 1
and follow with
if(i = 2)
then your assignment i = 2 necessarily overwrites the previous assignment.
Nick
[email protected]
On 23 January 2014 15:44, Amadou DIALLO <[email protected]> wrote:
> I have 2 remarks:
> - I am puzzled to see that mata accepts both (i=1) and (i==1). Because
> it is that flexible?
> - I don't understand why the command if (i = 1) { reassigns
> automatically i = 1 even if i = 2. What is happening here?
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