string-interpolation

How do I escape a dollar sign in string interpolation? def getCompanion(name: String) = Class.forName(s"my.package.$name\$") // --> "error: unclosed string literal" Just double it scala> val name = "foo" name: String = foo scala> s"my.package.$name$$" res0: String = my.package.foo$ 来源： https://stackoverflow.com/questions/16875530/escape-a-dollar-sign-in-string-interpolation

In Python, it is tedious to write: print "foo is" + bar + '.' Can I do something like this in Python? print "foo is #{bar}." Sean Vieira Python 3.6+ does have variable interpolation - prepend an f to your string: f"foo is {bar}" For versions of Python below this (Python 2 - 3.5) you can use str.format to pass in variables: # Rather than this: print("foo is #{bar}") # You would do this: print("foo is {}".format(bar)) # Or this: print("foo is {bar}".format(bar=bar)) # Or this: print("foo is %s" % (bar, )) # Or even this: print("foo is %(bar)s" % {"bar": bar}) Python 3.6 will have has literal

Since beta 8.3, zillions warnings "String interpolation produces a debug description for an optional value; did you mean to make this explicit?" appeared in my code. For example, the warning popped in the following situation up, where options could lead to nil: let msg = "*** Error \(options["taskDescription"]): cannot load \(sUrl) \(error)" As previously designed, it was ok for me (and the compiler) the optionals to be interpolated as 'nil'. But compiler changed its mind. What the compiler suggests is to add a String constructor with description as follows: let msg = "*** Error \(String

I'm working on a project that's based on the twig patternlab framework. I'm using JSON files for most of my content, especially for pages. I want to integrate a link (build by an atom) into a text I got from my JSON file that has a placeholder for the link. I'm working with texts from a multilingual cms so putting a placeholder into the text content is the easiest way to keep it flexible. This is an excerpt from my json file { "legal" : "Mit dem Absenden des Formulars akzeptieren Sie unsere #{ legalLink }.", "deeplink" : { "label" : "Datenschutzbedingungen", "url" : "#AGB_link" } } and this is

$computer = gc env:computername # Argument /RU '$computer'\admin isn't working. SchTasks /create /SC Daily /tn "Image Verification" /ST 18:00:00 /TR C:\bdr\ImageVerification\ImageVerification.exe /RU '$computer'\admin /RP password Basically I need to provide the computer name in the scheduled task... Thank you in advance! Single quoted strings will not expand variables in PowerShell. Try a double quoted string e.g.: "$computer\admin" use the command 'hostname' to get the name of the local pc. 来源： https://stackoverflow.com/questions/12393999/using-a-variable-powershell-inside-of-a-command

I just installed the .NET Framework 4.6 on my machine and then created a ConsoleApplication targeting .NET Framework 4.6 with Visual Studio 2013. I wrote the following in the Main method: string test = "Hello"; string format = $"{test} world!"; But this does not compile. Doing the same in Visual Studio 2015 works. Why? String interpolation is a C# 6.0 feature, not one of .NET Framework 4.6. VS 2013 doesn't support C# 6 but VS 2015 does. String interpolation is indeed a C# 6.0 feature, but C# 6 isn't limited to VS2015. You can compile applications that leverage C# 6.0 language features in

[EDIT 00]: I've edited several times the post and now even the title, please read below. I just learned about the format string method, and its use with dictionaries, like the ones provided by vars() , locals() and globals() , example: name = 'Ismael' print 'My name is {name}.'.format(**vars()) But I want to do: name = 'Ismael' print 'My name is {name}.' # Similar to ruby So I came up with this: def mprint(string='', dictionary=globals()): print string.format(**dictionary) You can interact with the code here: http://labs.codecademy.com/BA0B/3#:workspace Finally, what I would love to do is to

I am using template strings to generate some files and I love the conciseness of the new f-strings for this purpose, for reducing my previous template code from something like this: template_a = "The current name is {name}" names = ["foo", "bar"] for name in names: print (template_a.format(**locals())) Now I can do this, directly replacing variables: names = ["foo", "bar"] for name in names: print (f"The current name is {name}") However, sometimes it makes sense to have the template defined elsewhere -- higher up in the code, or imported from a file or something. This means the template is a