Month: September 2022

[Solved] How to detect if a PDF page has an image in it

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Using iText 5 you can find out whether images actually are shown on a page by parsing the page content into a custom RenderListener implementation. E.g. class ImageDetector implements RenderListener { public void beginTextBlock() { } public void endTextBlock() { } public void renderText(TextRenderInfo renderInfo) { } public void renderImage(ImageRenderInfo renderInfo) { imageFound = true; … Read more

[Solved] change a list column order scala

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if you are looking for swapping column 3rd with 4th, split with , construct new List with swapped columns concat List to get string example, scala> val list = List(“banana,QS,1,0,0”, “apple,EE,1,2,1”, “peas,US,1,4,4”) list: List[String] = List(banana,QS,1,0,0, apple,EE,1,2,1, peas,US,1,4,4) scala> list.map(_.split(“,”)).map(elem => List(elem(0), elem(1), elem(3), elem(2), elem(4)).mkString(“,”)) res0: List[String] = List(banana,QS,0,1,0, apple,EE,2,1,1, peas,US,4,1,4) solved change a … Read more

[Solved] How to convert csv to dictionary of dictionaries in python?

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You are looking for nested dictionaries. Implement the perl’s autovivification feature in Python (the detailed description is given here). Here is a MWE. #!/usr/bin/env python # -*- coding: utf-8 -*- import csv class AutoVivification(dict): “””Implementation of perl’s autovivification feature.””” def __getitem__(self, item): try: return dict.__getitem__(self, item) except KeyError: value = self[item] = type(self)() return value … Read more

[Solved] SQL ORA-02063 – How to fix this?

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It appears to be the blank space in DEF_WELD_ INC, which should be DEF_WELD_INC. I created a table v_biq_r8_qwb_events to match the columns expected by subquery “AQE Source Data 5.30.2018”, removed the line breaks in things like ON (“AQE Source Data 5.30.2018″.”EVENT_NO” = “400 Machines”.”MIN(EVENT_NO)”) which I’m assuming should be ON (“AQE Source Data 5.30.2018″.”EVENT_NO” … Read more

[Solved] How do i get the reference to the last (yet unfilled) element in a binary tree? [closed]

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In the discussion below, I demonstrate using a min-heap. A max-heap works the same way, except the root is the largest node rather than the smallest, and parents are larger than their children. Things work the same way, except that you reverse the sense of the comparisons. Insertion into a binary heap follows these rules: … Read more

[Solved] Cannot convert value of type ‘NSData’ to type ‘Date’ in coercion in json work? [closed]

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1- Replace this let jsonObject = try JSONSerialization.jsonObject(with: data as Date, options: .allowFragments) with let jsonObject = try JSONSerialization.jsonObject(with: data as Data, options: .allowFragments) it’s a Data object not Date 2- no need for fragments it can be let jsonObject = try JSONSerialization.jsonObject(with: data as Data, options: []) if let object = jsonObject as? [NSString: … Read more

[Solved] how to search for the value with a certain index in an array and modify its value?

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For a oneliner, you could use map from Array.prototype: secondArray = secondArray.map((element, index) => firstArray.includes(index) ? “blank” : element ) Please note the map function returns a new array, instead of modifying the original one. Edit: removed redundant return and curly-braces around the arrow function body 1 solved how to search for the value with … Read more

[Solved] I want to just use a simple for loop

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You are trying to achieve the following: import Foundation let input = [“VALUE ACTIVITY”, “BONUS ACTIVITY”, “JACKPOT EVENTS”, “VALUE ACTIVITY”, “JACKPOT EVENTS”] var output = [String]() for element in input { if element.contains(“VALUE ACTIVITY”) { output.append(element.replacingOccurrences(of: “VALUE ACTIVITY”, with: “Value”)) } else if element.contains(“JACKPOT EVENTS”) { output.append(element.replacingOccurrences(of: “JACKPOT EVENTS”, with: “Jackpot”)) } else if element.contains(“BONUS … Read more