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c - Why do we separately cast to "float" in an integer division?

For example: int number1 = 1, number2= 2; float variable = (float)number1/(float)number2; Instead of this, Why ... = (float)(number1/number2); See Question&Answers more detail:os...

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TypeError: Can only concatenate str (not "int") to str (simple Python programme)

I wrote this simple code and tried to execute in Windows 10 CMD ... and it gets the error message : TypeError: ... Python 3.7.0 in Windows 10 See Question&Answers more detail:os...

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web scraping - How do I scrape / automatically download PDF files from a document search web interface in R?

I am using the R programming language for NLP (natural language process) analysis - for this, I need to "webscrape" ... "pdf9", "pdf10"? Thanks See Question&Answers more detail:os...

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Assertion failure and NSInternalInconsistencyException in NativeScript

Can anyone help me on this? I am trying to run my NativeScript + Angular app in my iPhone. Terminal ... successfully built] Run Time Error: See Question&Answers more detail:os...

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python - Pretty print data in tkinter Label

I have following sample data data=[(1,'JohnCena','Peter',24,74), (2,'James','Peter',24,70), (3,'Cena',' ... How can I do that Here is the output See Question&Answers more detail:os...

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matlab - Convert output from symbolic math (sym) to float

My question is similar to this question but I believe it to be more general. I use Matlab's symbolic math ... access them later in my code? See Question&Answers more detail:os...

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python - PyCharm: ImportError no module named X?

X in this example represents any module or package you install. The problem: I have a problem with a ... solution to this specific problem. See Question&Answers more detail:os...

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html - Schema.org/Microdata markup for list of recent posts without providing "author" / "publisher"?

The following code shows a list of links to recent posts on an experimental blog site I am playing with. The problem ... /article> </li> </ul> See Question&Answers more detail:os...

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html - How to curve the div from bottom with image background

Is it possible to add the bottom curved using HTML CSS so we don't ned to crop the image like this? The main ... use the SVG? I am not sure. See Question&Answers more detail:os...

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cucumber - Karate - how to check if array contains values?

I have defined array * def array = [ {"code": "codeA", "boolValue": false, "a": 5, "c": false}, {" ... failed all the time I try to check that. See Question&Answers more detail:os...

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ios - dateFromString returns nil for some values

I am getting nil for some values while using dateFromString in swift. I searched a lot but in vain. Following is ... . Where am I getting wrong? See Question&Answers more detail:os...

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java - Where should i place my files in order to be able to access them when i run the jar?

I store some objects in files and everything works fine in Netbeans console. But when i run the JAR through ... app through the command line? See Question&Answers more detail:os...

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hadoop - Job queue for Hive action in oozie

I have a oozie workflow. I am submitting all the hive actions with <name>mapred.job.queue.name</name> < ... behind this behavior and solution. See Question&Answers more detail:os...

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javascript - Discord.js bot responds when mentioned

I'm trying to make my discord.js bot send a message when it is pinged. I was unsure how to do this so I ... can you show me how to do it? See Question&Answers more detail:os...

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Python Discord.py `time.sleep()` coroutine

import discord import os import random import time import math client = discord.Client() with open('admins.conf' ... and then nothing happens). See Question&Answers more detail:os...

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Comparing with date in Oracle sql

I have a column 'creation_date' which is of type 'date', when I am querying my table for distinct records ... doing wrong in these two queries. See Question&Answers more detail:os...

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vb.net - Show checked rows into another DataGridView

I have a DataGridView populated with a DataTable. I added a CheckBoxColumn to select some rows. My Goal is to show ... can I do it otherwise? See Question&Answers more detail:os...

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python - How do you get pygame to give warning when player touches side of screen?

I created a game using pygame, and I wanted to get pygame to give an error like "You can't touch the screen ... Does anyone know how to do this? See Question&Answers more detail:os...

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python - What is the difference between the two ways of accessing the hdf5 group in SVHN dataset?

I need to read the SVHN dataset and was trying to read the filename of the first image. I am struggling a bit ... equivalent of ascii '1'-> 49 See Question&Answers more detail:os...

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jquery - Why does everything display at once, using setTimeout in Javascript?

I'm trying to make a few things scroll down the screen in javascript, however, upon execution, it ... setTimeout function as PositionArray[i] See Question&Answers more detail:os...

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python - A clean way to organize and load files with subclasses

I have a parent class that provides abstract functions for manipulating hardware, and a directory full of classes that ... does it not matter? See Question&Answers more detail:os...

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python - How do you properly implement gravity to a free floating space object and some sort of friction when thrusting in opposite direction

I am trying to program movement that is basically like Asteroids where once UP button is pressed you accelerate ... show_go_screen() pg.quit() See Question&Answers more detail:os...

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lucene - Hibernate Search | ngram analyzer with minGramSize 1

I have some problems with my Hibernate Search analyzer configuration. One of my indexed entities ("Hospital") has ... that solves the problem? See Question&Answers more detail:os...

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Google spreadsheet "Cannot call method "getRange" of null"

I'd like to generate a unique ID in column A if column B has changed in every row from the 6th. It would be ... (sheet.getLastRow()-6)); } } See Question&Answers more detail:os...

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javascript - Shorthand for Object.create() with multiple properties

If I want to create an object in JavaScript that has a prototype link to another object, but has several of ... object1 as it's prototype link See Question&Answers more detail:os...

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javascript - find a value of table cell

<tbody id="contacttable"> </tbody> <script> var hrtypeCode = document.getElementById('hrtypeCode').value; var ... finding the value.. thanks. See Question&Answers more detail:os...

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javascript - Mocking dayjs extend

In my code that needs testing I use import dayjs from 'dayjs'; import utc from 'dayjs/plugin/utc'; dayjs ... both default dayjs but also extend? See Question&Answers more detail:os...

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Android Layout editor ConstraintLayout

I am running Android Studio (put on latest stabel upgrade the other day. When I use the Layout editor it ... there some version problem here? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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