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Pass a data.frame column name to a function

... Is there any way to pass the column name not as a string? – kmm Apr 14 '10 at 23:13 ...
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How to write a scalable Tcp/Ip based server

...n.ReceiveBuffer.IndexOf('\n', index)) != -1) { string s = connection.ReceiveBuffer.GetString(start, index - start - 1); s = s.Backspace(); LineReceivedEventArgs args = new LineReceivedEventArgs(connection, s); Delegate[] de...
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Is it better to reuse a StringBuilder in a loop?

I've a performance related question regarding use of StringBuilder. In a very long loop I'm manipulating a StringBuilder and passing it to another method like this: ...
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How to split a sequence into two pieces by predicate?

...like this (modify if you need to search for ints) def split(list_in: List[String], search: String): List[List[String]] = { def split_helper(accum: List[List[String]], list_in2: List[String], search: String): List[List[String]] = { val (h1, h2) = list_in2.span({x: String => x!= search}) ...
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Centering a view in its superview using Visual Format Language

...g only VFL. It is, however, not that difficult to do it using a single VFL string and a single extra constraint (per axis): VFL: "|-(>=20)-[view]-(>=20)-|" [NSLayoutConstraint constraintWithItem:view attribute:NSLayoutAttributeCenterX ...
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How to len(generator()) [duplicate]

...lution as it describes what I want to get, and it doesn't give me anything extra that's not required (such as a list of all the elements). Also listen to delnan's advice: If you're discarding the output of the generator it is very likely that there is a way to calculate the number of elements witho...
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Is there an expression for an infinite generator?

... knowing the syntax of iter (here with extra sentinel) and the syntax of lambda (here without any passed parameters, just return 0), the only place to hate is that enigmatic g1. – Sławomir Lenart Mar 11 '19 at 17:56 ...
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How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited

... Note that Matt's code will result in an extra comma at the end of the string; using COALESCE (or ISNULL for that matter) as shown in the link in Lance's post uses a similar method but doesn't leave you with an extra comma to remove. For the sake of completeness, here's the relevant code from L...
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Why shouldn't I use mysql_* functions in PHP?

... functions? (e.g. mysql_query() , mysql_connect() or mysql_real_escape_string() )? 13 Answers ...
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What is the difference between sigaction and signal?

... And that's it. Anything else is not guaranteed to be portable. That's so stringent that most people ignore those rules — but the resulting code is dodgy. – Jonathan Leffler Oct 27 '16 at 16:14 ...