quotations

When quoting <@ 1 + 1 @> I want "1 + 1" instead of "Call (None, Int32 op_Addition[Int32,Int32,Int32](Int32, Int32), [Value (1), Value (1)])" You'll have to write it yourself. See the F# quotations visualizer code as a guide for transforming the quotations abstract syntax tree. I have implemented a quotation decompiler as part of a larger open source project Unquote . It can decompile many simple F# quoted expressions as single-line non-light syntax strings (see the project's home page for a list of decompiler features). For example, > decompile <@ (11 + 3) / 2 = String.length ("hello world"

I can convert a quotation of type Expr<'a -> 'b> to a Linq expression via the following snippet: /// Converts a F# Expression to a LINQ Lambda let toLambda (exp:Expr) = let linq = exp.ToLinqExpression() :?> MethodCallExpression linq.Arguments.[0] :?> LambdaExpression /// Converts a Lambda quotation into a Linq Lamba Expression with 1 parameter let ToLinq (exp : Expr<'a -> 'b>) = let lambda = toLambda exp Expression.Lambda<Func<'a, 'b>>(lambda.Body, lambda.Parameters) Now I want to convert a quotation of type Expr<'a * 'b -> 'c> or maybe even Expr<'a -> 'b -> 'c> to a Linq Lambda Expression of

How would one write a regex that matches a pattern that can contain quotes, but if it does, must have matching quotes at the beginning and end? "?(pattern)"? Will not work because it will allow patterns that begin with a quote but don't end with one. "(pattern)"|(pattern) Will work, but is repetitive. Is there a better way to do that without repeating the pattern? You can get a solution without repeating by making use of backreferences and conditionals : /^(")?(pattern)(?(1)\1|)$/ Matches: pattern "pattern" Doesn't match: "pattern pattern" This pattern is somewhat complex, however. It first

This question already has an answer here: Single quotes vs. double quotes in Python [closed] 19 answers In other words, how do I know which one to use? I know when I use strings. I would do string = "This is a string" When would I use ' ' or """ """? '...' and "..." are equivalent. If you have an apostrophe in the string, it is easier to use "..." so you don't have to escape the apostrophe. If you have quotes in the string, it's easier to use '...' so you don't have to escape the quotes. Triple quotes (both varieties, """ and ''' are permitted) allow the string to contain line breaks. These

I'm just starting out on Fortran and am confused with the usage of double vs single quotation marks. They are equivalent. There is no difference in their usage. You can employ this to print one of the quotation characters: print *, "'" print *, '"' prints first ' and then " . Note: You can also use two quote characters in a row to print one: print *, """" print *, '''' prints first " and then ' . Functionally they have no difference. Just try to be consistent about which one you use. If your strings tend to have double quotes in them, use single quotes everywhere; if you use single quotes more

I want to insert text with single quote Eg john's to table in sql server 2005 database Escape single quote with an additional single as Kirtan pointed out And if you are trying to execute a dynamic sql (which is not a good idea in the first place) via sp_executesql then the below code would work for you sp_executesql N'INSERT INTO SomeTable (SomeColumn) VALUES (''John''''s'')' The answer really depends on how you are doing the INSERT . If you are specifying a SQL literal then you need to use the double-tick approach: -- Direct insert INSERT INTO Table1 (Column1) VALUES ('John''s') -- Using a