如何使用空格分隔键访问值？ [英] How to access a value using a space-separated key?

问题描述

当我有空格分隔键时，如何使用它来提取值而不重新创建键？

When I have a space-separated key, how can I use it to extract a value without re-creating the key?

我有一组潜在的键，列名实际上作为从clojure-csv返回的数据中的第一个序列:(这是格式化以避免滚动。）

I have a set of potential keys, column names actually, as the first sequence in data returned from clojure-csv: (This is formatted to avoid scrolling.)

["AGY/DIV " "STS" "GIC-ID     " 
"LAST-NAME      " 
"FIRST-NAME     " 
"COVERAGE DESCRIPTION                                   " 
"PREMIUM  " 
"RUN-DATE" 
"BIL MO "]

行和zipmap的键与每个后续行（序列）的数据：

Then I create keys from this row and zipmap the keys with each subsequent row (sequence) of data:

(defn create-map-keys
  "Takes a sequence, and turns it into viable keys for a map."
  [in-seq]
  (map (fn [element] (keyword element)) (map #(cstr/trim %1) in-seq)))

; gic-csv-keys    
(:AGY/DIV :STS :GIC-ID :LAST-NAME :FIRST-NAME 
:COVERAGE DESCRIPTION :PREMIUM :RUN-DATE :BIL MO) 

(defn zip-apply-col-nams
   [col-keys row]
   (zipmap col-keys row))

对于测试数据，我将键映射到csv-data的第二行。

For test data, I zipmap the keys to the second row of the csv-data.

(def zm2 (zip-apply-col-nams gic-csv-keys (first gic-csv-data)))

当我尝试从：COVERAGE DESCRIPTION 键中提取一个值时，得到此错误

When I try to extract a value from the :COVERAGE DESCRIPTION key, I get this error

 (:COVERAGE DESCRIPTION zm2)
CompilerException java.lang.RuntimeException: Unable to resolve symbol: DESCRIPTION in this context, compiling:(NO_SOURCE_PATH:23) 

但是，这样工作：

(zm2 (keyword "COVERAGE DESCRIPTION"))
"HARVARD PILGRIM FAMILY - INSURED                       "

我应该修改空格分隔的键以替换空格，例如，一个破折号，还是有另一种方法来引用键而不重新创建它？

Should I be modifying space-separated keys to replace the space with, for example, a dash, or is there another way to refer to the key without recreating it?

感谢。

推荐答案

记录：某些键关键字在Clojure。您应该用 - 或_替换空格。或者你应该使用纯字符串作为键，并使用 get 。

For the record: "some key" is (at the moment) not a valid keyword in Clojure. You should either replace the whitespace with - or _. Or you should go with plain strings as keys and use get.

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