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Avoid writing same else statement in nested if/else

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1

How do I avoid having to write the else statement twice in nested if/else statements?

func GetPortFromEnvironment(name string, defaultPort int32) int32 
 var port int32
 if env := os.Getenv("SERVICE_PORT"); env != "" 
 if _port, err := strconv.ParseInt(env, 10, 32); err != nil 
 port = int32(_port)
 else 
 port = defaultPort
 
 else 
 port = defaultPort
 
 return port

go

share|improve this question

asked Mar 9 at 7:30

dimigueldimiguel

775924

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  flat is better than nested. You can write both if statements into a single if with an and (or its equivalent in go language. wait, why am i here? goes back to python), and then you just have 1 if statement left. Also, in this example, you can return the port value early as well for the same effect.
  
  – Paritosh Singh
  Mar 9 at 7:35
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I guess the question is how do I join two different conditionals?
  
  – dimiguel
  Mar 9 at 7:36
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Google says && is the logical and in GO. I personally dont know this language im afraid, someone would have to confirm the same. Try using it?
  
  – Paritosh Singh
  Mar 9 at 7:38
  

  
  
  
  

add a comment | 

1

How do I avoid having to write the else statement twice in nested if/else statements?

func GetPortFromEnvironment(name string, defaultPort int32) int32 
 var port int32
 if env := os.Getenv("SERVICE_PORT"); env != "" 
 if _port, err := strconv.ParseInt(env, 10, 32); err != nil 
 port = int32(_port)
 else 
 port = defaultPort
 
 else 
 port = defaultPort
 
 return port

go

share|improve this question

asked Mar 9 at 7:30

dimigueldimiguel

775924

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  flat is better than nested. You can write both if statements into a single if with an and (or its equivalent in go language. wait, why am i here? goes back to python), and then you just have 1 if statement left. Also, in this example, you can return the port value early as well for the same effect.
  
  – Paritosh Singh
  Mar 9 at 7:35
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I guess the question is how do I join two different conditionals?
  
  – dimiguel
  Mar 9 at 7:36
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Google says && is the logical and in GO. I personally dont know this language im afraid, someone would have to confirm the same. Try using it?
  
  – Paritosh Singh
  Mar 9 at 7:38
  

  
  
  
  

add a comment | 

How do I avoid having to write the else statement twice in nested if/else statements?

func GetPortFromEnvironment(name string, defaultPort int32) int32 
 var port int32
 if env := os.Getenv("SERVICE_PORT"); env != "" 
 if _port, err := strconv.ParseInt(env, 10, 32); err != nil 
 port = int32(_port)
 else 
 port = defaultPort
 
 else 
 port = defaultPort
 
 return port

go

share|improve this question

asked Mar 9 at 7:30

dimigueldimiguel

775924

func GetPortFromEnvironment(name string, defaultPort int32) int32 
 var port int32
 if env := os.Getenv("SERVICE_PORT"); env != "" 
 if _port, err := strconv.ParseInt(env, 10, 32); err != nil 
 port = int32(_port)
 else 
 port = defaultPort
 
 else 
 port = defaultPort
 
 return port

share|improve this question

asked Mar 9 at 7:30

dimigueldimiguel

775924

share|improve this question

asked Mar 9 at 7:30

dimigueldimiguel

775924

asked Mar 9 at 7:30

dimigueldimiguel

775924

asked Mar 9 at 7:30

dimigueldimiguel

775924

1 Answer
1

active

oldest

votes

3

I'll avoid using if which includes an optional statement:

if statement; condition 

and using simple if with:

func GetPortFromEnvironment(name string, defaultPort int32) int32 
 env := os.Getenv("SERVICE_PORT")

 // no env value. return defaultPort
 if env == "" 
 return defaultPort
 

 // there's env value.
 port, err := strconv.ParseInt(env, 10, 32)
 if err != nil 

 // Unable to parse port. Fallback to default.
 return defaultPort
 

 return int32(port)

share|improve this answer

edited Mar 9 at 10:54

Chris Drew

11.9k22146

answered Mar 9 at 8:13

ישו אוהב אותךישו אוהב אותך

16.5k84361

add a comment | 

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3

I'll avoid using if which includes an optional statement:

if statement; condition 

and using simple if with:

func GetPortFromEnvironment(name string, defaultPort int32) int32 
 env := os.Getenv("SERVICE_PORT")

 // no env value. return defaultPort
 if env == "" 
 return defaultPort
 

 // there's env value.
 port, err := strconv.ParseInt(env, 10, 32)
 if err != nil 

 // Unable to parse port. Fallback to default.
 return defaultPort
 

 return int32(port)

share|improve this answer

edited Mar 9 at 10:54

Chris Drew

11.9k22146

answered Mar 9 at 8:13

ישו אוהב אותךישו אוהב אותך

16.5k84361

add a comment | 

3

I'll avoid using if which includes an optional statement:

if statement; condition 

and using simple if with:

func GetPortFromEnvironment(name string, defaultPort int32) int32 
 env := os.Getenv("SERVICE_PORT")

 // no env value. return defaultPort
 if env == "" 
 return defaultPort
 

 // there's env value.
 port, err := strconv.ParseInt(env, 10, 32)
 if err != nil 

 // Unable to parse port. Fallback to default.
 return defaultPort
 

 return int32(port)

share|improve this answer

edited Mar 9 at 10:54

Chris Drew

11.9k22146

answered Mar 9 at 8:13

ישו אוהב אותךישו אוהב אותך

16.5k84361

add a comment | 

I'll avoid using if which includes an optional statement:

if statement; condition 

and using simple if with:

func GetPortFromEnvironment(name string, defaultPort int32) int32 
 env := os.Getenv("SERVICE_PORT")

 // no env value. return defaultPort
 if env == "" 
 return defaultPort
 

 // there's env value.
 port, err := strconv.ParseInt(env, 10, 32)
 if err != nil 

 // Unable to parse port. Fallback to default.
 return defaultPort
 

 return int32(port)

share|improve this answer

edited Mar 9 at 10:54

Chris Drew

11.9k22146

answered Mar 9 at 8:13

ישו אוהב אותךישו אוהב אותך

16.5k84361

if statement; condition 

func GetPortFromEnvironment(name string, defaultPort int32) int32 
 env := os.Getenv("SERVICE_PORT")

 // no env value. return defaultPort
 if env == "" 
 return defaultPort
 

 // there's env value.
 port, err := strconv.ParseInt(env, 10, 32)
 if err != nil 

 // Unable to parse port. Fallback to default.
 return defaultPort
 

 return int32(port)

share|improve this answer

edited Mar 9 at 10:54

Chris Drew

11.9k22146

answered Mar 9 at 8:13

ישו אוהב אותךישו אוהב אותך

16.5k84361

edited Mar 9 at 10:54

Chris Drew

11.9k22146

edited Mar 9 at 10:54

Chris Drew

11.9k22146

answered Mar 9 at 8:13

ישו אוהב אותךישו אוהב אותך

16.5k84361

answered Mar 9 at 8:13

ישו אוהב אותךישו אוהב אותך

16.5k84361