string-interpolation

This question already has an answer here: How replace variable in string with value in php? 11 answers The only way I've found to interpolate a string (I.E. expand the variables inside it) is the following: $str = 'This is a $a'; $a = 'test'; echo eval('return "' . $str . '";'); Keep in mind that in a real-life scenario, the strings are created in different places, so I can't just replace ' s with " s. Is there a better way for expanding a single-quoted string without the use of eval()? I'm looking for something that PHP itself provides. Please note : Using strtr() is just like using something

I'm somewhat baffled by how difficult this turns out to be. I've already looked around stackoverflow, but no solution seems to work fine for me. What I want to do: val file = checkcache(fileName) file match { case Some(_) => {println(s"File $file found!"); file.get} case None => createFile(fileName) } Now, this works perfectly fine, for a file named "blubb" that already resides in the cache it outprints File blubb found and returns the file. Now I want this to be File "blubb" found So I tried doing this: case Some(_) => { println(s"File \" $file \" found!"); file.get} Compiler throws ')'

This works (x => s"$x") but this (s"${_}") gives [error] ...: unbound placeholder parameter [error] (s"${_}") Is this just because the s"..." construct suffers from Leaky Abstraction ? Furthermore: (s"$_") fails with a completely different output: [error] ...: invalid string interpolation: `$$', `$'ident or `$'BlockExpr expected [error] (s"$_") [error] ^ [error] ...: unclosed string literal [error] (s"$_") kiritsuku Calling string interpolation a leaky abstraction is totally right in my opinion. While it works fine in most cases, there are many edge cases where it just doesn't work the way how

This question already has an answer here: How can I do string interpolation in JavaScript? 18 answers C# uses string interpolation int value = 100; Console.WriteLine($"The size is {value}."); Output: The size is 100. How to make same method in typescript? Nitzan Tomer In JavaScript you can use template literals : let value = 100; console.log(`The size is ${ value }`); Ygalbel Just use special ` var lyrics = 'Never gonna give you up'; var html = `<div>${lyrics}</div>`; You can see more examples here . 来源： https://stackoverflow.com/questions/45399951/how-to-make-string-interpolation-in

How can I perform interpolation within single quotes? I tried something like this but there are two problems. string = 'text contains "#{search.query}"' It doesn't work I need the final string to have the dynamic content wrapped in double quotes like so: 'text contains "candy"' Probably seems strange but the gem that I'm working with requires this. You can use %{text contains "#{search.query}"} if you don't want to escape the double quotes "text contains \"#{search.query}\"" . Ahmed Eshaan 'Hi, %{professor}, You have been invited for %{booking_type}. You may accept, reject or keep discussing

So i've got a "template string" that looks like this: var templateString = "Hello my name is {{name}}"; The name that I want to interpolate is a in variable. So I proceeded this way: var miniScope = { name: "Chuck" }; var sentence = $interpolate(templateString)(miniScope); /* sentence: "Hello my name is Chuck" */ This works. Now I'd like to bold the name. I've obviously tried: var miniScope = { name: "<strong>Chuck</strong>" }; But the html code gets escaped. Any idea how I can achieve this? PS: For those of you who wonder why I don't just put the string in the template, it's because my