Control Flow

Compound Expressions



In [57]:

    
workspace()
z = begin
    x = 1
    y = 2
    x + y
end

println(z)

#using the (;) chain syntax
y = begin x = 1; y = 2; x + y end
println(y)

3
3

Conditional Expressions



In [58]:

    
a = 3
b = 4

if a < b
println("a is less than b")
elseif a > b
println("a is greater than b")
else
println("a is equal to b")
end









    



a is less than b

Short Circuit Evaluation



In [59]:

    
workspace()
t(x) = (println(x); true)
f(x) = (println(x); false)

t(4) || f(1)
# As the first function returns a true value, the statment is true, so it stops evaluating









    



4






    Out[59]:





true

Repeared Evaluation: Loops

While loop



In [60]:

    
i = 1
while i <= 5
println(i)
i += 1
end



In [61]:

    
j=1
while true
         println(j)
         if j >= 5
           break
         end
         j += 1
       end

For loop



In [62]:

    
for i = 1:5
println(i)
end



In [63]:

    
#you can use for to iterate over arrays
for i in [1,4,0]
         println(i)
end
str1 ="Hello"
for j in str1
    println(j)
end









    



1
4
0
H
e
l
l
o

Try Catch



In [64]:

    
workspace()
k(x) = try
sqrt(x)
catch
sqrt(complex(x, 0))
end

println(k(4))
k(-4)









    



2.0






    Out[64]:





0.0 + 2.0im



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