map

Changing the leaflet map language?

由 天大地大妈咪最大 提交于 2021-01-28 06:04:05
问题 Please is it possible to ** change the language of leaflet map ** tiles in a specific area? like changing it to Arabic language 回答1: If you use this plugin for Leaflet which gives Google Map tiles, then that will be based on your Browser settings according to Google's API Concepts page. You can get Open Street Map labels in various languages by adding the language identifer to the tile server link. Like this: http://{s}.www.toolserver.org/tiles/osm-labels-ar/{z}/{x}/{y}.png You still need the

iteration over a C++ map giving infinite loop

由 拥有回忆 提交于 2021-01-28 01:08:48
问题 I have the following method in C++ that only removes the elements associated with a particular tableId from a map. 69 void 70 ObjectFinder::flush(uint64_t tableId) { 71 72 RAMCLOUD_TEST_LOG("flushing object map"); 74 // find everything between tableId, 0 75 // keep scanning util find all the entries for that table 76 std::map<TabletKey, ProtoBuf::Tablets::Tablet>::const_iterator it; 79 for (it = tableMap.begin(); it != tableMap.end(); it++) { 80 TabletKey current = it->first; 81 if (tableId =

Recursive merge nested Map in Scala

由 匆匆过客 提交于 2021-01-27 20:20:31
问题 I have some nested maps like: val map1 = Map("key1"->1, "key2"->Map("x"->List(1,2))) val map2 = Map("key3"->3, "key2"->Map("y"->List(3,4))) And I want to merge them to obtain the result map like; val res = Map("key1"->1, "key2"->Map("x"->List(1,2), "y"->List(3,4)), "key3"->3) So nested maps should also be merged. The type of the maps and nested maps can be assumed as Map[String, Any]. It's considered an exception if the two maps have conflict keys (eg. values of the same key are different,

Sorted Map Implementation

由 强颜欢笑 提交于 2021-01-27 07:10:38
问题 My Task In my JavaScript code i'm often using objects to "map" keys to values so i can later access them directly through a certain value. For example: var helloMap = {}; helloMap.de = "Hallo"; helloMap["en"] = "Hello"; helloMap.es = "Hola"; So i build up the map object step by step in my source code using the two available notations object style and array style . Later i can then access the values i added through helloMap["de"] for example. So thats all fine if i don't have to care about the

Timed vector vs map vs unordered_map lookup

由 百般思念 提交于 2020-12-31 04:05:25
问题 I was curious on vector lookup vs map lookup and wrote a little test program for it.. its seems like vector is always faster the way I'm using it.. is there something else I should take into consideration here? Is the test biased in any way? The results of a run is at the bottom.. its in nanoseconds, but gcc doesn't seem to support it on my platform. Using string for the lookup would of course change things a lot. The compile line I'm using is this: g++ -O3 --std=c++0x -o lookup lookup.cpp

Is it possible to change all values of an array without a loop in php?

由 馋奶兔 提交于 2020-12-28 07:08:30
问题 I have the following array in php: $a = $array(0, 4, 5, 7); I would like to increment all the values without writing a loop (for, foreach...) // increment all values // $a is now array(1, 5, 6, 8) Is it possible in php ? And by extention, is it possible to call a function on each element and replace that element by the return value of the function ? For example: $a = doubleValues($a); // array(0, 8, 10, 14) 回答1: This is a job for array_map() (which will loop internally): $a = array(0, 4, 5, 7

Is it possible to change all values of an array without a loop in php?

由 試著忘記壹切 提交于 2020-12-28 07:05:20
问题 I have the following array in php: $a = $array(0, 4, 5, 7); I would like to increment all the values without writing a loop (for, foreach...) // increment all values // $a is now array(1, 5, 6, 8) Is it possible in php ? And by extention, is it possible to call a function on each element and replace that element by the return value of the function ? For example: $a = doubleValues($a); // array(0, 8, 10, 14) 回答1: This is a job for array_map() (which will loop internally): $a = array(0, 4, 5, 7

springMVC笔记系列(14)——模型数据处理篇 之 Map

由 坚强是说给别人听的谎言 提交于 2020-12-19 08:40:37
Spring MVC 在内部使用了一个 org.springframework.ui.Model 接口存储模型数据 具体步骤： – Spring MVC 在调用方法前会创建一个隐含的模型对象作为模型数据的存储容器。 – 如果方法的入参为 Map 或 Model 类型，Spring MVC 会将隐含模型的引用传递给这些入参。在方法体内，开发者可以通过这个入参对象访问到模型中的所有数据，也可以向模型中添加新的属性数据 参数的类型可以Map接口引用，也可以是ModelMap或Model。 package com.happyBKs.springmvc.handlers; import java.util.Arrays; import java.util.Date; import java.util.Map; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.happyBKs.springmvc.beans.Location; @RequestMapping("/model")

Java 8 Optional and flatMap - what is wrong?

由 ◇◆丶佛笑我妖孽 提交于 2020-12-03 17:59:29
问题 Some piece of code: public class Player { Team team; String name; } public class Team { List<Player> players; } public class Demo { @Inject TeamDAO teamDAO; @Inject PlayerDAO playerDAO; List<String> findTeamMatesNames(String playerName) { Optional<Player> player = Optional.ofNullable(playerDAO.get(playerName)); return player.flatMap(p -> teamDAO.findPlayers(p.team)) .map(p -> p.name) .orElse(Collections.emptyList()); } } Why am I not able to do this? In flatMap method I am getting error "Type

Java 8 Optional and flatMap - what is wrong?

由 安稳与你 提交于 2020-12-03 17:58:08
问题 Some piece of code: public class Player { Team team; String name; } public class Team { List<Player> players; } public class Demo { @Inject TeamDAO teamDAO; @Inject PlayerDAO playerDAO; List<String> findTeamMatesNames(String playerName) { Optional<Player> player = Optional.ofNullable(playerDAO.get(playerName)); return player.flatMap(p -> teamDAO.findPlayers(p.team)) .map(p -> p.name) .orElse(Collections.emptyList()); } } Why am I not able to do this? In flatMap method I am getting error "Type
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