mutation

List value reduction algorithm

由 别等时光非礼了梦想. 提交于 2019-12-11 08:57:19
问题 Forgive me, but I am very confused and I cannot find any sources that are pointing my in the right direction. Given list of n elements: [3, 6, 5, 1] Reduce the values to be no larger than the size of the list while keeping prioritization values relative to one another (In their original order). Constraints: Order must be maintained Elements are >= 0 Distinct values I am trying to stay away from sorting and creating a new list, but modifying the list in-place. What my expected outcome should

Mutating list in python

由 ╄→гoц情女王★ 提交于 2019-12-10 10:45:25
问题 I want to define a function which can mutate the inputted list by adding 1's([1,1,1,...]) in to it. But, I don't want to use loops to perform this simple operation. # input - a list (empty list) # - number of elements to initialize # output- None # - But it will have to mutate the inputted (list) def initialize_one(empty_lis, n): # Do nothing if e_lis is a non-empty list if len(empty_lis) is not 0: return else: temp = [1] * n # empty_lis = temp will not mutate # And I don't want to use loops

Why doesn't MutationObserver code run on Chrome 30?

由 ◇◆丶佛笑我妖孽 提交于 2019-12-10 03:50:21
问题 From http://updates.html5rocks.com/2012/02/Detect-DOM-changes-with-Mutation-Observers I got the following code: var insertedNodes = []; var observer = new WebKitMutationObserver(function(mutations) { alert('run'); mutations.forEach(function(mutation) { for (var i = 0; i < mutation.addedNodes.length; i++) insertedNodes.push(mutation.addedNodes[i]); }) }); observer.observe(document, { childList: true }); console.log(insertedNodes); var divElement = document.createElement('div'); divElement

c++ Genetic Algorithm Mutation error

由 最后都变了- 提交于 2019-12-08 05:44:02
问题 I Have a problem with the mutation function within my genetic Algorithm. I can't quite see what I am doing wrong either. I've looked at this code for a while and I think the logic is correct, it's just not producing the results i want. The problem When i output the Binary array located in the Child Struct, If mutation has occured on any of the bits, then a random number will be changed, and not the one that should be. for example 0000000 is the binary string mutation has occured on the second

c++ Genetic Algorithm Mutation error

由 人盡茶涼 提交于 2019-12-07 15:23:25
I Have a problem with the mutation function within my genetic Algorithm. I can't quite see what I am doing wrong either. I've looked at this code for a while and I think the logic is correct, it's just not producing the results i want. The problem When i output the Binary array located in the Child Struct, If mutation has occured on any of the bits, then a random number will be changed, and not the one that should be. for example 0000000 is the binary string mutation has occured on the second bit 0001000 would be the result This section is located within the main. for (int Child = 0; Child <

What is mutation in cassandra?

由 会有一股神秘感。 提交于 2019-12-07 07:32:46
问题 What is mutation in cassandra? What is it doing? i didnt find any full information about it... Can you answer or share the link with manual or description Thanks 回答1: From http://wiki.apache.org/cassandra/API: Mutation A Mutation encapsulates either a column to insert, or a deletion to execute for a key. Like ColumnOrSuperColumn, the two properties are mutually exclusive - you may only set one on a Mutation. 回答2: Mutation is a thrift-generated class defined in the cassandra.thrift file. You

Mutating list in python

由 試著忘記壹切 提交于 2019-12-06 11:34:49
I want to define a function which can mutate the inputted list by adding 1's([1,1,1,...]) in to it. But, I don't want to use loops to perform this simple operation. # input - a list (empty list) # - number of elements to initialize # output- None # - But it will have to mutate the inputted (list) def initialize_one(empty_lis, n): # Do nothing if e_lis is a non-empty list if len(empty_lis) is not 0: return else: temp = [1] * n # empty_lis = temp will not mutate # And I don't want to use loops to append # because if n = 100,000 # it will have to loop for 100,000 times lis = [] n = 10 initialize

Why doesn't MutationObserver code run on Chrome 30?

由 喜欢而已 提交于 2019-12-05 04:08:37
From http://updates.html5rocks.com/2012/02/Detect-DOM-changes-with-Mutation-Observers I got the following code: var insertedNodes = []; var observer = new WebKitMutationObserver(function(mutations) { alert('run'); mutations.forEach(function(mutation) { for (var i = 0; i < mutation.addedNodes.length; i++) insertedNodes.push(mutation.addedNodes[i]); }) }); observer.observe(document, { childList: true }); console.log(insertedNodes); var divElement = document.createElement('div'); divElement.innerHTML = 'div element'; document.querySelector('body').appendChild(divElement); jsFiddle: http:/

Selenium: Watching for a dom event while executing other actions

由 别等时光非礼了梦想. 提交于 2019-12-04 06:28:28
问题 Using Selenium I need to validate that an element, as it is dragged across the window, will trigger a 'drop zone' and then release that element in the zone. I can drag the element all over the page, but need to determine when the 'drop zone' element is added to the dom so I know I can release the element. I have looked at 'Mutation Observers' and that would be perfect except the observer does not return until the callback is executed. I can't drag the element around at the same time I am

Replace array item with another one without mutating state

由 心不动则不痛 提交于 2019-11-30 11:41:49
This is how example of my state looks: const INITIAL_STATE = { contents: [ {}, {}, {}, etc.. ], meta: {} } I need to be able and somehow replace an item inside contents array knowing its index, I have tried: return { ...state, contents: [ ...state.contents[action.meta.index], { content_type: 7, content_body: { album_artwork_url: action.payload.data.album.images[1].url, preview_url: action.payload.data.preview_url, title: action.payload.data.name, subtitle: action.payload.data.artists[0].name, spotify_link: action.payload.data.external_urls.spotify } } ] } where action.meta.index is index of
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