如何檢索Clojure中列表中的HashMap中的鍵的值？

我正在尋找檢索給定的關鍵是一個列表中的值。如何檢索Clojure中列表中的HashMap中的鍵的值？

(defn string-tuple [my-string] 
     (partition 2 1 my-string)) 

    (defn split-and-frequent-tuple [lines] 
     (frequencies (string-tuple lines))) 

    (defn split-and-frequent [lines] 
     (frequencies lines)) 

(defn string-split [my-string] 
    (str/split my-string #" ")) 


    (def string-pairs (split-and-frequent-tuple (string-split "<s> I am Sam </s> <s> Sam I am </s> <s> I do not like green eggs and ham </s>"))) 

    ;; Calculate that bigram probability 
    (println string-pairs) 
    (println (string-pairs '(green eggs)))

基本上，字符串對計算項目數量的頻率，例如（綠色雞蛋）出現在文本中。但是，當我嘗試使用類似(string-pairs '(green eggs))的方法檢索密鑰時，即使映射顯示該密鑰的值爲1，我也總是會得到nil。

我只是想知道我錯了，我用盡了一切:(

感謝您的時間

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2016-05-01 Jeel Shah

當您使用println顯示值，字符串和符號看起來是一樣的，即使他們不平等。

當你正在調試，使用prn它明確地顯示數值，或使用pr-str生成字符串pr或prn會用，你println調用中。

這應該給你正確的結果（如果它們的內容相同，向量和列表在Clojure中是相等的）。

(string-pairs ["green" "eggs"])

來源

2016-05-01 01:36:13 noisesmith

OMG，非常感謝你！：D我會盡快接受。 –

使用prn的另一個參數：'{「：a 0」「：b 1」}'是一個有效的哈希映射，但println使它看起來像完全不同（但也是有效的）。這不僅僅是一個理論上的問題，至少在我的代碼中，包含空格的字符串在哈希映射中非常有規律地出現。 – noisesmith

如何檢索Clojure中列表中的HashMap中的鍵的值？

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