A = randn(5, 5)
5×5 Matrix{Float64}: -0.240283 1.60532 -1.15529 0.260169 1.2585 0.423185 -0.867211 -1.2176 -0.512242 -1.04863 0.341219 -0.140905 -0.03313 -1.7478 -0.598576 0.333095 0.424912 -0.576262 -2.0013 -0.671772 1.95515 -0.338912 1.11586 1.74802 -0.0456715
string(A)
"[-0.2402826849352379 1.6053180905943534 -1.1552904597891978 0.26016872756648324 1.2584979744077427; 0.42318527856955884 -0.8672106347900607 -1.2175988774418558 -0.5122421299004011 -1.048628660584414; 0.3412186857086955 -0.1409045074904742 -0.03312995769217814 -1.7478019236951658 -0.598576214513245; 0.3330952595045313 0.42491234364889346 -0.5762617588060361 -2.001300594425213 -0.6717715695671819; 1.955147023461729 -0.3389123482008798 1.115860107519043 1.7480203496645637 -0.04567149678748327]"
write("A.txt", string(A))
495
read("A.txt", String)
"[-0.2402826849352379 1.6053180905943534 -1.1552904597891978 0.26016872756648324 1.2584979744077427; 0.42318527856955884 -0.8672106347900607 -1.2175988774418558 -0.5122421299004011 -1.048628660584414; 0.3412186857086955 -0.1409045074904742 -0.03312995769217814 -1.7478019236951658 -0.598576214513245; 0.3330952595045313 0.42491234364889346 -0.5762617588060361 -2.001300594425213 -0.6717715695671819; 1.955147023461729 -0.3389123482008798 1.115860107519043 1.7480203496645637 -0.04567149678748327]"
Meta.parse(read("A.txt", String))
:([-0.2402826849352379 1.6053180905943534 -1.1552904597891978 0.26016872756648324 1.2584979744077427; 0.42318527856955884 -0.8672106347900607 -1.2175988774418558 -0.5122421299004011 -1.048628660584414; 0.3412186857086955 -0.1409045074904742 -0.03312995769217814 -1.7478019236951658 -0.598576214513245; 0.3330952595045313 0.42491234364889346 -0.5762617588060361 -2.001300594425213 -0.6717715695671819; 1.955147023461729 -0.3389123482008798 1.115860107519043 1.7480203496645637 -0.04567149678748327])
A_read = eval(Meta.parse(read("A.txt", String)))
5×5 Matrix{Float64}: -0.240283 1.60532 -1.15529 0.260169 1.2585 0.423185 -0.867211 -1.2176 -0.512242 -1.04863 0.341219 -0.140905 -0.03313 -1.7478 -0.598576 0.333095 0.424912 -0.576262 -2.0013 -0.671772 1.95515 -0.338912 1.11586 1.74802 -0.0456715
A_read == A
true