AND function in Power BI - powerbi

Question

I'm trying to create a new mesure in order to create a gantt chart, but the dax field keeps spitting that there's an error. Where in fact i literally copied the same code in the tutorial i'm following.
And the new mesure is as follows:
CF Gantt =
var startdate =
CALCULATE(
min(Contracts_range[Start Date ],
REMOVEFILTERS(TabelaCalculada)
), var EndDate =
CALCULATE(
min(Contracts_range[End Date]),
REMOVEFILTERS(TabelaCalculada)
)
var ProjectPeriod =
min(TabelaCalculada[Date]) >= startdate
&& min(TabelaCalculada[Date]) <= startdate
var result =
if(
TabelaCalculada,
1
)
return
You see PBI is saying the following: "the syntax for '&&' is incorrect", i even searched the documentation for this particular AND method but i don't see how it's wrong.

Answer 1

This DAX is invalid in multiple ways which I point out on the assumption that you are trying to learn what valid DAX is.
Comma after the definition of var startdate.
Project Period is a bunch of filters with no actual function.
Project Period is trying to filter on an aggregate, which is not allowed.
return statement is missing the return argument
var result is incomprehensible.
This will return a 1 for each row where the date falls between minimum Start Date and maximum End Date, per your latest comment.
CF Gantt =
var startdate =
CALCULATE(
min(Contracts_range[Start Date]),
REMOVEFILTERS(TabelaCalculada)
)
var EndDate =
CALCULATE(
max(Contracts_range[End Date]),
REMOVEFILTERS(TabelaCalculada)
)
var result = if(
selectedvalue(TabelaCalculada[Date] >= startdate
&& TabelaCalculada[Date] <= EndDate,1)
)
return result

Answer 2

I've found a third syntax alternative that worked. So my goal as i explained was to create a Gantt Chart using the matrix innate visual and for that one way to do it is to create a measure that returns a 1 if i have a date that's either on or after the starting date and on or before the ending date.
BetweenDates =
VAR beginning = min ( Contracts_range[Start Date])
VAR finish = max ( Contracts_range[End Date] )
VAR duration = max ( Contracts_range[Duration] )
VAR colorVar = 0
RETURN
SWITCH (
TRUE(),
AND ( MAX ( 'Calendar'[Date] ) >= beginning , MIN ( 'Calendar'[Date] ) <= finish ) && duration >0,1
)