Android Question [Solved] Placeholder in strings?

E

emexes

Expert

Licensed User

• Jun 28, 2020

• #2

B4X:

Dim name As String = "Hello {0}, my name is {1}".Replace("{0}", "guys").Replace("{1}", "Thomas")

might get you where you want to go.

 

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Pflichtfeld

Active Member

Licensed User

• Jun 28, 2020

• #3

Thanks, emexes, that is a workaround.

 

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E

emexes

Expert

Licensed User

• Jun 28, 2020

• #4

You could use more meaningful placeholder names too, like:

B4X:

Dim Greeting As String = "Hello {group}, my name is {me}"
Log( Greeting.Replace("{group}", "guys").Replace("{me}", "Thomas") )

 

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JohnC

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Longtime User

• Jun 28, 2020

• #5

I can't think of one off the top of my head, but could do something like this:

B4X:

MyString = "Hello {1}, my name is {2}"

Mystring.Replace("{1}", "guys")
Mystring.Replace("{2}", "Thomas")

 

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agraham

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Longtime User

• Jun 28, 2020

• #6

[B4X] Smart String Literal

The "smart string" literal is a more powerful version of the standard string literal. It has three advantages: Supports multi-line strings. No need to escape quotes. Supports string interpolation. The smart string literal starts with $" and ends with "$. Examples: Dim s As String = $"Hello...

www.b4x.com

 

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Pflichtfeld

Active Member

Licensed User

• Jun 28, 2020

• #7

Thanks agraham, as I wrote: (could not adapt smart string literal to my issue)
"You can put any code you like inside the placeholders.

B4X:

Dim x = 1, y = 2, z = 4 As Int
Log($"x = ${x}, y = ${y}, z = ${Sin(z)}"$) 'x = 1, y = 2, z = -0.7568024953079282

This is a compile time feature. You cannot load the strings from a file for example. "
That is what I wanna do, load the string from a file and insert the placeholder later.

 

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Erel

B4X founder

Staff member

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Longtime User

• Jun 29, 2020

• #8

You can use WebUtils.ReplaceMap: https://www.b4x.com/android/forum/threads/webapp-mini-template-engine.40182/#content

 

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Pflichtfeld

Active Member

Licensed User

• Jun 29, 2020

• #9

Thanks Erel. Works fine.

 

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aeric

Expert

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Longtime User

• Jun 29, 2020

• #10

Erel said:

You can use WebUtils.ReplaceMap: https://www.b4x.com/android/forum/threads/webapp-mini-template-engine.40182/#content

Click to expand...

Thanks. I am going to use this too.

 

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