No, both examples are not equal. In example one the variable is initialized at construction time and class1 cannot be instantiated without it. In example 2, the variable is not initialized and is given the default value of null until it is set at some later time setVar1 No, you will not get an exception. … Read more
Why does indentation matter? In Python, indentation is used to delimit blocks of code. This is different from many other languages that use curly braces {} to delimit blocks such as Java, Javascript, and C. Because of this, Python users must pay close attention to when and how they indent their code because whitespace matters. … Read more
This line: i = word.find(letter) always finds the first occurrence of letter in word, and this line: start = indeces.index(i) always finds the first occurrence of i in indeces. Then, this line: index=word.find(letter,start) includes start, so just finds the same letter straight away! The only way to make your current code work would be to … Read more
When you merge your dataframes, you are doing a join on values that are not unique. When you are joining all these dataframes together, you are getting many matches. As you add more and more currencies you are getting something similar to a Cartesian product rather than a join. In the snippet below, I added … Read more
Moving the line stringstream aa; just before the line aa << b; solves the problem for me. This is perhaps caused by use of aa both as an input stream as well as output stream. Not sure of the details. Update Here’s your program with a bit of error checking code thrown in. #include <iostream> … Read more
You’ll need to add the image as a resource to the project, and then build an ImageView that uses that image resource. Check out the details at http://developer.android.com/guide/topics/graphics/2d-graphics.html solved How can I load an image in Android? [closed]
While looking at your code, why would one want to read class specific properties in a generic method? The only solutions i see is to use Reflection, or create an abstract base class with a before save method and call that method in de Save() method. Add a generic type constraint to the DBObject class … Read more
OP here. These are the steps I took to resolve my issue, based on the last edit of my question: With the separate files, as given in my question, the error was Expected identifier in mscmix_dat.c. Per @LightnessRacesinOrbit’s suggestion, I consolidated the multiple main.cpp, msclib.h, msclib.c, and mscmix_dat.c files into two files: main.cpp and msclib.c, … Read more
a1 is an uninitialized pointer. It does not point anywhere. Using it causes undefined behaviour. You can only dereference pointers that point to valid objects. In your sample code there is actually no way to create a saa since it has protected constructors. You would have to derive a class from saa, create an instance … Read more
Thanks @aarni joensuu. Turns out I should add global top in those functions only then the change will be made to the overall variable. solved is ‘if top==None:top=1’ correct
Tl;dr Schedule a microtask The point being that using await schedules the rest of the function as a microtask. Please note that this answer don’t attempt in any way to detect whether a value has been discarded or not. This is solely in answer to the first paragraph (Use-case), dropping the need for the both … Read more
You seem to be confused as to how to create embeds. const Discord = require(‘discord.js’); const bot = new Discord.Client(); bot.on(“message”, async (msg) => { const exampleEmbed = new Discord.MessageEmbed() //embeds are part of the `Discord` object defined above .setColor(‘#0099ff’) .setTitle(‘Some title’) .setURL(‘https://discord.js.org/’) .setAuthor(‘Some name’, ‘https://i.imgur.com/wSTFkRM.png’, ‘https://discord.js.org’) .setDescription(‘Some description here’) .setThumbnail(‘https://i.imgur.com/wSTFkRM.png’) .addFields( { name: ‘Regular … Read more
You can just use regex, example: import re # Example 1: word5 example_string = ‘word5 word5555′ only_word5 = re.findall(r’word5\b’, example_string) print(only_word5) 2 solved How to find a word and only this word? [closed]
Many ways to do it Quick and dirty with split and filter out the empties var string = ‘”abc””xyz””123″‘ var result = string.split(‘”‘).filter(Boolean); console.log(result); Splitting with slice var string = ‘”abc””xyz””123″‘ var result = string.slice(1, string.length -1).split(‘””‘); console.log(result); A regular expression var string = ‘”abc””xyz””123″‘ var result = string.match(/[^”]+/g) console.log(result); solved split double quoted string … Read more
Code one has className=”cards__items__img”, code two has className=”cards__item__img”. Code one has className=”cards__items__link”, code two has className=”cards__item__link”. Items is plural on first code and singular on second. Reason? I don’t know but the first code is very poorly formatted. 1 solved Can u please tell me if their is any difference between the codes. And if … Read more