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denkeni
/ Double_to_String.swift
Last active
December 31, 2017 08:59
Double to String Precision Issue (Swift & Obj-C)
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| let value : Double = 1234567890.1234567 | |
| // 1. String format | |
| "\(value)" == "1234567890.1234567" // false | |
| "\(value)" // "1234567890.12346" | |
| value.description | |
| String(format: "%f", value) == "1234567890.1234567" // false | |
| String(format: "%f", value) // "1234567890.123457" | |
| String(format: "%.7f", value) == "1234567890.1234567" // true! |
denkeni
/ Auto-Layout-Programmatically-3-3.swift
Last active
May 6, 2017 15:07
Auto Layout Programmatically 3-3
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| let subview = UIStackView() | |
| subview.axis = .horizontal | |
| subview.alignment = .center | |
| subview.distribution = .equalSpacing | |
| subview.addArrangedSubview(arrangedSubview1) | |
| subview.addArrangedSubview(arrangedSubview2) | |
| subview.addArrangedSubview(arrangedSubview3) |
denkeni
/ Auto-Layout-Programmatically-3-2.swift
Created
May 6, 2017 14:58
Auto Layout Programmatically 3-2
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| let spacer1 = UILayoutGuide() | |
| let spacer2 = UILayoutGuide() | |
| view.addLayoutGuide(spacer1) | |
| view.addLayoutGuide(spacer2) |
denkeni
/ Auto-Layout-Programmatically-3-1.swift
Last active
May 6, 2017 14:52
Auto Layout Programmatically 3-1
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| let spacer1 = UIView() | |
| let spacer2 = UIView() | |
| spacer1.translatesAutoresizingMaskIntoConstraints = false | |
| spacer2.translatesAutoresizingMaskIntoConstraints = false | |
| view.addSubview(spacer1) | |
| view.addSubview(spacer2) | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|-(p)-[subview1(100)]-[spacer1]-[subview2(120)]-[spacer2(==spacer1)]-[subview3(130)]-(p)-|", | |
| options: [], metrics: metrics, views: viewsDict) | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:|-(p)-[subview1]-(p)-|", |
denkeni
/ Auto-Layout-Programmatically-2-5.swift
Created
April 4, 2017 04:06
Auto Layout Programmatically 2-5
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| constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|-(15)-[subview1(100)]-(10)-[subview2(120)]-(10)-[subview3]-(15)-|", | |
| options: .alignAllTop, metrics: nil, views: viewsDict) | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:[subview1(300)]", | |
| options: [], metrics: nil, views: viewsDict) | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:[subview2(200)]", | |
| options: [], metrics: nil, views: viewsDict) | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:[subview3(150)]", | |
| options: [], metrics: nil, views: viewsDict) |
denkeni
/ Auto-Layout-Programmatically-2-4.swift
Last active
April 4, 2017 04:04
Auto Layout Programmatically 2-4
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| let metrics = ["p": 15] // padding | |
| let viewsDict = ["subview1": subview1, "subview2": subview2, "subview3": subview3] | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|-(p)-[subview1(100)]-(10)-[subview2(120)]-(10)-[subview3]-(p)-|", | |
| options: [], metrics: metrics, views: viewsDict) | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:|-(p)-[subview1]-(p)-|", | |
| options: [], metrics: metrics, views: viewsDict) | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:|-(p)-[subview2]-(p)-|", | |
| options: [], metrics: metrics, views: viewsDict) | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:|-(p)-[subview3]-(p)-|", | |
| options: [], metrics: metrics, views: viewsDict) |
denkeni
/ Auto-Layout-Programmatically-2-3.swift
Created
April 4, 2017 04:02
Auto Layout Programmatically 2-3
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| let viewsDictA = ["subviewA": subviewA] | |
| constraints.append(subviewA.centerXAnchor.constraint(equalTo: view.centerXAnchor)) | |
| constraints.append(subviewA.centerYAnchor.constraint(equalTo: view.centerYAnchor)) | |
| // width | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:[subviewA(200)]", | |
| options: [], metrics: nil, views: viewsDictA) | |
| // height | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:[subviewA(100)]", | |
| options: [], metrics: nil, views: viewsDictA) |
denkeni
/ Auto-Layout-Programmatically-2-2.swift
Last active
April 4, 2017 04:00
Auto Layout Programmatically 2-2
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| let metrics = ["v": 150, "h": 100] | |
| let viewsDictB = ["subview": subviewB] | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:|-(v)-[subview]-(v)-|", | |
| options: [], metrics: metrics, views: viewsDictB) | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|-(h)-[subview]-(h)-|", | |
| options: [], metrics: metrics, views: viewsDictB) |
denkeni
/ Auto-Layout-Programmatically-2-1.swift
Created
April 4, 2017 03:53
Auto Layout Programmatically 2-1
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| let viewsDictB = ["subviewB": subviewB] | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "V:|-(150)-[subviewB]-(150)-|", | |
| options: [], metrics: nil, views: viewsDictB) | |
| // V: Vertical | |
| constraints += NSLayoutConstraint.constraints(withVisualFormat: "H:|-(100)-[subviewB]-(100)-|", | |
| options: [], metrics: nil, views: viewsDictB) | |
| // H: Horizontal |
denkeni
/ Auto-Layout-Programmatically-1-3.swift
Last active
March 27, 2017 14:50
Auto Layout Programmatically 1-3
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| subviewC.translatesAutoresizingMaskIntoConstraints = false | |
| view.addSubview(subviewC) | |
| constraints.append(subviewC.centerXAnchor.constraint(equalTo: view.centerXAnchor)) | |
| constraints.append(subviewC.centerYAnchor.constraint(equalTo: view.centerYAnchor)) | |
| constraints.append(subviewC.widthAnchor.constraint(equalToConstant: 200)) | |
| constraints.append(subviewC.heightAnchor.constraint(equalToConstant: 100)) |
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