Recent questions tagged hashmap

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hashmap - Map<String, HashSet<String>> to JSON, & Pretty Print

I'm trying to make my dataset correspond to this example: var family = [{ "name" : "Jason", "age" : "24", " ... value) { this.value = value; } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hashmap - How to Store unique objects to avoid the duplicates in java Set?

How to Store unique objects to avoid the duplicates in java Set? For example Consider Employee object which (Employee Id, ... best way's to do? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hashmap - Java many to many association map

I have two classes, ClassA and ClassB, as well as a "many to many" AssociationClass. I want a structure that ... I don't need persistence stuff. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hashmap - Populate an enum with values from database

I have a table which maps String->Integer. Rather than create an enum statically, I want to populate the ... database's AUTOINCREMENT column). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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497 views

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hashmap - Ruby Hash Whitelist Filter

I am trying to figure out how I can filter out key and value pairs from one filter into another For example I want ... , not what I don't want. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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370 views

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hashmap - Is there a SoftHashMap in Java?

I know there is a WeakHashMap in java.util, but since it uses WeakReferences for everything, which is only ... in the Java RT Package. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hashmap - Error thrown citing match arms with incompatible types when pattern matching an Option

I am fairly new to Rust and cannot get my head around this confusing error. I am simply trying to match on ... compiler is having with my code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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393 views

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hashmap - Java On-Memory Efficient Key-Value Store

I have store 111 million key-value pairs (one key can have multiple values - maximum 2/3) whose key are 50 ... we can save space there also. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hashmap - Swagger complex response model with dynamic key value hash maps

I'm struggling with the syntax of swagger to describe a response type. What I'm trying to model is a hash map ... as the value of the hash map. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hashmap - clojure convert lazy-seq to hash map

I'm a clojure beginner. How do I create a map from a lazySeq? (def fields [:name :age :color]) (def values ["joe ... ? ;; (get mymap :age) ;; 32 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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458 views

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hashmap - I would like to see a hash_map example in C++

I don't know how to use the hash function in C++, but I know that we can use hash_map. Does g++ ... What is a simple example using hash_map? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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382 views

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hashmap - Java 8 Grouping with Multiple Keys

I am looking for some help in grouping a list of objects from a list with multiple keys. Basically, I have a ... Thanks in advance for the help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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466 views

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hashmap - Efficient way to Handle ResultSet in Java

I'm using a ResultSet in Java, and am not sure how to properly close it. I'm considering using the ResultSet to ... )); } } return row; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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491 views

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hashmap - Hash Map in Python

I want to implement a HashMap in Python. I want to ask a user for an input. depending on his input I am ... ; streetno.put("5","Kohli") See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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423 views

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hashmap - How to merge Ruby hashes

How can I merge these two hashes: {:car => {:color => "red"}} {:car => {:speed => "100mph"}} To get: {: ... color => "red", :speed => "100mph"}} See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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