quocnb

Find and print text of binary file

strings <file_name> | grep "your_text"

Find text in image file

1. same above
2. Find hidden text by https://stylesuxx.github.io/steganography/

Find text in multiple directories

quocnb

import UIKit

class MarginLabel: UILabel {

    var insets = UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5)

    override func drawText(in rect: CGRect) {
        super.drawText(in: rect.inset(by: insets))
    }

quocnb

public struct URLCredentialHelper {
    enum URLCredentialError {
        static let invalidUrl = NSError(domain: NSURLErrorDomain, code: NSURLErrorBadURL, userInfo: nil)
    }

    static func store(user: String, password: String, url: String) throws {
        let protectionSpace = try createProtectionSpace(for: url)
        let credentital = URLCredential(user: user, password: password, persistence: .permanent)
        URLCredentialStorage.shared.set(credentital, for: protectionSpace)
    }

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extension Sequence {
    func forEach(_ closure: (Element) -> () -> Void) {
        for element in self {
            closure(element)()
        }
    }
}

let arr = [view1, view2]
arr.forEach(UIView.removeFromSuperview)

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private let swizzling: (AnyClass, Selector, Selector) -> () = { forClass, originalSelector, swizzledSelector in
    let originalMethod = class_getInstanceMethod(forClass, originalSelector)
    let swizzledMethod = class_getInstanceMethod(forClass, swizzledSelector)
    method_exchangeImplementations(originalMethod!, swizzledMethod!)
}

extension UIViewController {
    static let swizzled: Void = {
        let originalSelector = #selector(viewDidLoad)
        let swizzledSelector = #selector(swizzled_viewDidload)

quocnb

1. Error

1. XGBoost Install Error

https://stackoverflow.com/a/43101972/2776008

brew install gcc --without-multilib
git clone --recursive https://github.com/dmlc/xgboost
cd xgboost; cp make/config.mk ./config.mk

quocnb

Nice pyplot show in pycharm

Create configure python file

ipython profile create
ipython profile locate

Open Configure file

quocnb

NaN Percent

total = df.isnull().sum().sort_values(ascending=False)
percent = (df.isnull().sum()/df.isnull().count()).sort_values(ascending=False)
missing_data = pd.concat([total, percent], axis=1, keys=['Total', 'Percent'])
missing_data.head(20)

Heat map

quocnb

Setup

1. Install Homebrew

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

2. Add Homebrew Tap

brew tap vapor/homebrew-tap
brew update

quocnb

Code quality control

Swiftlint is best choice

Bug control

Install Crashlytics

Upload dsym file (using fastlane for auto do it)

Auto build

Fastlane is best choice.