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collectionview part 4 swift

string to float swift
https://www.hackingwithswift.com/example-code/language/how-to-convert-a-string-to-a-float

static method with struct method
https://stackoverflow.com/questions/13372194/whats-the-difference-between-a-static-struct-method-and-a-static-class-method

dateformat swift
https://stackoverflow.com/questions/35700281/date-format-in-swift

get specific CALayer swift
https://stackoverflow.com/questions/26402170/how-can-i-select-calayer-in-swift-by-index

replace CALayer
https://stackoverflow.com/questions/39706137/how-to-replace-current-calayer

repeating array swift
https://stackoverflow.com/questions/37095943/repeating-array-in-swift

cell button clicked
https://stackoverflow.com/questions/44368515/swift-3-how-to-get-button-in-uicollectionviewcell-work

cell button clicked with delegate
https://stackoverflow.com/questions/20655060/get-button-click-inside-uitableviewcell
https://medium.com/@aapierce0/swift-using-protocols-to-add-custom-behavior-to-a-uitableviewcell-2c1f09610aa1

multiple select collectionview
https://stackoverflow.com/questions/52757524/how-do-i-got-multiple-selections-in-uicollection-view-using-swift-4

register cell difference with xib


        collectionView.register(SelectRegionViewCell.self, forCellWithReuseIdentifier: "SelectRegion")



        collectionView.register(UINib(nibName: "SelectRegionViewCell", bundle: nil), forCellWithReuseIdentifier: "SelectRegion")


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collection view part6 swift

preselect collectionview https://stackoverflow.com/questions/45610785/how-to-preselect-and-highlight-a-cell-from-a-uicollectionview https://hackernoon.com/uicollectionviewcell-selection-made-easy-41dae148379d if collectionview allow multiple selection remeber add this, cell item could be Deselect collectionView. selectItem (at: indexPath, animated: true , scrollPosition: . top ) https://stackoverflow.com/questions/15330844/uicollectionview-select-and-deselect-issue save indexpath userdefault https://stackoverflow.com/questions/34804294/how-to-save-nsindexpath-locally https://stackoverflow.com/questions/37001643/how-to-add-nsindexpath-to-nsuserdefaults-in-swift navigation presneted viewcontroller dismiss https://stackoverflow.com/questions/31205002/why-is-it-bad-practice-to-have-a-viewcontroller-dismiss-itself indexpath comparison         if selectIndexPath . contains (indexPath) {             cell. isSelect...
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android java 小數點的坑

如果temp  = 12.5                         val newTemp = "%.1f".format(Tempvalue) 原本的寫法是這樣 在法語區 將newTemp.toFloat() 後會掛，因為法語地區的小數點是 , 逗號 所以沒法轉成 12.5  會變成 12,5 後來的解法 將拿到的數字硬轉成 12.5  其他就不管了 val newTemp = "%.1f" . format ( Locale . US , Tempvalue)
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collection view part 5 swift

load plist data https://www.cnblogs.com/gongyuhonglou/p/6029340.html https://blog.csdn.net/sophieDJF/article/details/88247388 https://stackoverflow.com/questions/24045570/how-do-i-get-a-plist-as-a-dictionary-in-swift https://stackoverflow.com/questions/40436895/how-to-read-plist-without-using-nsdictionary-in-swift get specifig key in dictionary https://stackoverflow.com/questions/24640990/how-do-i-get-the-key-at-a-specific-index-from-a-dictionary-in-swift get specifig key with index https://stackoverflow.com/questions/31775724/swift-dictionary-access-via-index get collectionview selection https://stackoverflow.com/questions/21639394/how-to-select-item-in-collectionview-programmatically add button in uinavigationbar https://www.hackingwithswift.com/example-code/uikit/how-to-add-a-bar-button-to-a-navigation-bar child viewcontroller pass data to parent viewcontroller https://stackoverflow.com/questions/39285588/how-to-pass-data-from-child-to-parent-view-controller-in-sw...
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