hashmap

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Error when adding HashMap values to TreeSet

Here is some sample code...I always seem to get a ClassCastException...anybody point out what I am doing wrong?[详细]

2023-03-25 21:57 分类：问答
Find duplicate values in Java Map?

I want to display the values in a HashMap. A HashMap may have duplicate values (but not duplicate keys), but I want to display a value only once.[详细]

2023-03-25 12:26 分类：问答
ordered version of unordered_map?

In my following program I\'m currently using unordered_map just because I wanted O(1) search/insert time. But now I wanted the items to be ordered. Sorting it every time is very inefficient. What are[详细]

2023-03-25 05:19 分类：问答
Ruby: Understanding Hash from Rufus-Scheduler

I am writing an app that is utilizing the Rufus-Scheduler Ruby Gem. This is what a returned hash looks like when display ALL running jobs...[详细]

2023-03-23 09:46 分类：问答
Is there Java HashMap equivalent in PHP?

I need PHP object similar to HashMap in Java, but I didn\'t find when I googled, so if someone knows how I can mimic HashMaps in PHP, help w开发者_如何学Goould be appreciated.Arrays in PHP can have Ke[详细]

2023-03-23 09:16 分类：问答
C++: What is faster - lookup in hashmap or switch statement?

I have a code pattern which translates one integer to another. Just like this: int t(int value) { switch (value) {[详细]

2023-03-23 08:40 分类：问答
C: Storing up to a million entries in a hash table

I\'m working on a project where efficiency is crucial. A hash table would be very helpful since I need to easily look up the memory address of a node based on a key. The 开发者_运维技巧only problem I[详细]

2023-03-23 07:26 分类：问答
JAXB HashMap unmappable

I want to convert a HashMap in a POJO class to XML. I tried using the XmlAdapter but it results in only the key and value pairs of the HashMap being the attributes of the XML Elements. I need the Key[详细]

2023-03-23 07:01 分类：问答
Struts2 <s:select/> and a list of HashMap

I have a list of HashMap in my Action class, something like {month=05, day=20, dayOfWeek=Mon}. I need to pass it to a select tag from Struts2. Generated code from page looks like this:[详细]

2023-03-22 12:18 分类：问答
The time-complexity of using object as a dictionary in JavaScript

I am considering using JavaScript object as a dicti开发者_开发问答onary. var dict = {} dict[\'a\'] = 1;[详细]

2023-03-22 02:22 分类：问答