A minimalstic calculator.
- Only supported basic operations : [ +, -, *, / ]
- Also supports long chanin of expressions: like
1 + 2 * 3 - 4 / 2on thecalc>prompt.
We need to fire go build cmdcalc.go from the console inside the parent folder.
This will generate cmdcalc.exe or cmdcalc binary files based on the platform you are using.
This will be pretty straight forward. We need to call the binary file generated in the build stage.
In our case; cmdcalc.exe and we can play with few inputs and check.
C:\Users\Home\Desktop\uservices>go build cmdcalc.go
C:\Users\Home\Desktop\uservices>cmdcalc.exe
calc>1+2
error: missing arguments (pass space between number and symbols)
C:\Users\Home\Desktop\uservices>cmdcalc.exe
calc>1 + 2
3
calc>1 + 2 + 3
6
calc>1 + 2 + 3 - 1
5
calc>1 + 2 + 3 - 1 * 2
10
calc>1 + 2 + 3 - 1 * 2 / 5
2
calc>1 + 2 + 3 ^ 1 * 2 / 5
error: operator not from ( + - * / )
calc>calc>^C
A Statical calculator.
- It supports basic statistics : like [ Total, Min, Max, Avg ]
- Also supports extended statistics: like [ Mean, Median, Mode, StandardDeviation, Variance ]
- Also accepts user data from cmd loops: like
1, 2, 3.3, 4.42, 0.5, 6, 7.8, 9on thestatc>prompt. It will work with single/multi space(' ') and comma(',') as separator. Also supports mix of space(' ') and comma(',') as separator.
We need to fire go build cmdstatc.go from the console inside the parent folder.
This will generate cmdstatc.exe or cmdstatc binary files based on the platform you are using.
This will be pretty straight forward. We need to call the binary file generated in the build stage.
In our case; cmdstatc.exe and we can play with few inputs and check.
C:\Users\Home\Desktop\uservices>go build cmdstatc.go
C:\Users\Home\Desktop\uservices>cmdstatc.exe
:: Statistics ::
Data: [1 2.3 3 4.56 0.5 6 7.8 9]
Total: 34.160000
Mean: 4.270000
Median: 2.530000
Sorted Median: 3.780000
Max: 9.000000
Max Indices: [7]
Min: 0.500000
Min Indices: [4]
Variance: 8.538800
Standard Deviation: 2.922123
Modes: []
Mode Repeat Count: 0
C:\Users\Home\Desktop\uservices>cmdstatc.exe
statc>1, 2, 3.3, 4.42, 0.5, 6, 7.8, 9
inp: 1, 2, 3.3, 4.42, 0.5, 6, 7.8, 9
inp : 1,2,3.3,4.42,0.5,6,7.8,9
:: Statistics ::
Data: [1 2 3.3 4.42 0.5 6 7.8 9]
Total: 34.020000
Mean: 4.252500
Median: 2.460000
Sorted Median: 3.860000
Max: 9.000000
Max Indices: [7]
Min: 0.500000
Min Indices: [4]
Variance: 8.605794
Standard Deviation: 2.933563
Modes: []
Mode Repeat Count: 0
statc>statc>^C
C:\Users\Home\Desktop\uservices>
C:\Users\Home\Desktop\uservices\monocalc>go build .
C:\Users\Home\Desktop\uservices\monocalc>monocalc.exe
2020/04/04 11:14:35 Server Starting on 8080
^C
C:\Users\Home\Desktop\uservices\monocalc>curl http://localhost:8080/status
{"data":"ok"}
C:\Users\Home\Desktop\uservices\monocalc>curl http://localhost:8080/calculate
{"data":"called /calculate"}
C:\Users\Home\Desktop\uservices\monocalc>curl -X POST http://localhost:8080/calculate
404 page not found
C:\Users\Home\Desktop\uservices\monocalc>curl http://localhost:8080/api/v1/calculate
C:\Users\Home\Desktop\uservices\monocalc>curl -X POST http://localhost:8080/api/v1/calculate
{"data":"called /calculate"}
C:\Users\Home\Desktop\uservices\monocalc>
C:\Users\Home\Desktop\uservices\monocalc>monocalc.exe 2020/04/12 10:04:01 Server Starting on 8080 Received on /calculate: Received on /calculate: data Received on /calculate: input-data Received on /calculate:
C:\Users\Home\Desktop\uservices\monocalc>curl -X POST http://localhost:8080/api/v1/calculate -d "-"
{"data":"called /calculate "}
C:\Users\Home\Desktop\uservices\monocalc>curl -X POST http://localhost:8080/api/v1/calculate -d "{ \"input\": \"data\" }"
{"data":"called /calculate data"}
C:\Users\Home\Desktop\uservices\monocalc>curl -X POST http://localhost:8080/api/v1/calculate -d "{ \"input\": \"input-data\" }"
{"data":"called /calculate input-data"}
C:\Users\Home\Desktop\uservices\monocalc>
C:\Users\Home\Desktop\uservices\monocalc>curl -X POST http://localhost:8080/api/v1/calculate -d "{ \"wrong\": \"input-data\" }"
{"data":"called /calculate "}
C:\Users\Home\Desktop\uservices\monocalc>
C:\Users\Home\Desktop\uservices\monocalc>monocalc.exe
2020/04/19 11:11:53 Server Starting on 8080
Received on /calculate: input-data
Returened on /calculate: map[operands:[input-data] origins:input-data result:WIP service:name: monocalc, version: v1]
C:\Users\Home\Desktop\uservices\monocalc>
C:\Users\Home\Desktop\uservices\monocalc>curl -X POST http://localhost:8080/api/v1/calculate -d "{ \"wrong\": \"input-data\" }"
{"data":"called /calculate " }
C:\Users\Home\Desktop\uservices\monocalc>curl -X POST http://localhost:8080/api/v1/calculate -d "-"
{"error":"Invalid Input","service":"name: monocalc, version: v1"}
C:\Users\Home\Desktop\uservices\monocalc>
C:\Users\Home\Desktop\uservices\monocalc>curl -X POST http://localhost:8080/api/v1/calculate -d "{ \"input\": \"input-data\" }"
{"operands":"[input-data]","origins":"input-data","result":"WIP","service":"name: monocalc, version: v1"}
C:\Users\Home\Desktop\uservices\monocalc>monocalc.exe
2020/04/19 11:17:08 Server Starting on 8080
Received on /calculate: input-data
2020/04/19 11:17:13 char i not allowed
C:\Users\Home\Desktop\uservices\monocalc>monocalc.exe
2020/04/19 11:19:11 Server Starting on 8080
Received on /calculate: 1 2 3
tokens: [{1 1} {1 2} {1 3}]
Returened on /calculate: map[operands:[1 2 3] origins:1 2 3 result:3 service:name: monocalc, version: v1]
^C
C:\Users\Home\Desktop\uservices\monocalc>
C:\Users\Home\Desktop\uservices\monocalc>curl -X POST http://localhost:8080/api/v1/calculate -d "{ \"input\": \"input-data\" }"
curl: (56) Recv failure: Connection was reset
C:\Users\Home\Desktop\uservices\monocalc>
C:\Users\Home\Desktop\uservices\monocalc>curl -X POST http://localhost:8080/api/v1/calculate -d "{ \"input\": \"1 2 3\" }"
{"operands":"[1 2 3]","origins":"1 2 3","result":3,"service":"name: monocalc, version: v1"}
C:\Users\Home\Desktop\uservices\monocalc>
C:\Users\Home\Desktop\uservices\monocalc>monocalc.exe
2020/05/16 18:12:47 Server Starting on 8080
Received on /calculate: 1+2-3
tokens: [{1 1} {0 +} {1 2} {0 -} {1 3}]
Evaluate: 1 + 2 = 3
Evaluate: 3 - 3 = 0
Returened on /calculate: map[operands:[1+2-3] origins:1+2-3 result:0 service:name: monocalc, version: v1]
Received on /calculate: 1 2 # 3
2020/05/16 18:14:38 char # not allowed
C:\Users\Home\Desktop\uservices\monocalc>
C:\Users\Home\Desktop\uservices>curl -X POST http://localhost:8080/api/v1/calculate -d "{ \"input\": \"1+2-3\" }"
{"operands":"[1+2-3]","origins":"1+2-3","result":0,"service":"name: monocalc, version: v1"}
C:\Users\Home\Desktop\uservices>curl -X POST http://localhost:8080/api/v1/calculate -d "{ \"input\": \"1 2 # 3\" }"
curl: (56) Recv failure: Connection was reset
C:\Users\Home\Desktop\uservices>