case-insensitive

I have a list of console platforms that I'm sorting in Elasticsearch. Here is the mapping for the "name" field: { "name": { "type": "multi_field", "fields": { "name": { "type": "string", "index": "analyzed" }, "sort_name": { "type": "string", "index": "not_analyzed" } } } } When I execute the following query { "query": { "match_all": {} }, "sort": [ { "name.sort_name": { "order": "asc" } } ], "fields": ["name"] } I get these results: { "took": 1, "timed_out": false, "_shards": { "total": 3, "successful": 3, "failed": 0 }, "hits": { "total": 17, "max_score": null, "hits": [ { "_index":

I want to know which method is better to check if a var (input by user on keyboard) matches with a regex in a case insensitive way. I know there are some different possibilities. Example: I want a regex matching an empty value and all of this list: Y , N , y , n , Yes , No , YES , NO I searched looking different methods. Not sure if could be another better. I'll put a couple of them working for me. First one is a little "tricky" setting all to uppercase for the comparison: #!/bin/bash yesno="null" #any different value for initialization is valid while [[ ! ${yesno^^} =~ ^[YN]$|^YES$|^NO$|^$ ]]

In a recent VB.NET project I adopted the naming conventions I'm used to using in C#. Namely, often calling a variable the same name as the class it references, only with a different case, e.g. Foo foo = new Foo(); // C# Dim foo As New Foo() ' VB.NET I find this is often the clearest way to write code, especially for small methods. This coding style obviously works fine in C#, being case sensitive, and because of the syntax highlighting provided by Visual Studio, it is very easy to see that the class name and the variable name are different. However, to my surprise, this also worked fine nearly

I found that if a user registers with an email and use a capital letter in their email when I do the following I get nil. Example: username = Dillan@example.com params[:user][:email] = dillan@example.com user = User.find_by_email(params[:user][:email]) user.nil? => true How can I search for an email without the problems of case sensitivity or how an I write a find_by_email that is case insensitive? If a user(say X) has an email 'Dillan@example.com', then User.find(:all, :conditions => ["lower(email) =?", "dillan@example.com"]) should return the user X. I didnt replicate the situation but that

Delphi XE3 introduced a Contains string helper function, but the help-file/ wiki does not state whether it is case sensitive or not? Yes it is case sensitive. Quick test: ShowMessage('TEST'.Contains('t').ToString(TUseBoolStrs.True)); returns False Use ToLowerInvariant or ToUpperInvariant to compare case insensitive: ShowMessage('TEST'.ToLowerInvariant.Contains('t').ToString(TUseBoolStrs.True)); 来源： https://stackoverflow.com/questions/30180634/is-the-contains-delphi-string-helper-case-sensitive