[Solved] How this code works in python?

[ad_1] In python when you try to access True/False in list as index it will consider True=1 and False=0. As a result when you wrote a[True] it actually means a[1] and a[False] means a[0]. To clarify this try a[-True] it will interpret it as a[-1] and print 9 a = [5,6,7,8,9] print(a[True]) #prints 6 print(a[False]) … Read more

[Solved] read mixed data into R

[ad_1] I have saved that one line of text you have provided into a file called ‘parseJSON.txt’. You can then read the file in as per usual using read.table, then make use of library(jsonlite) to parse the 3rd column. I’ve also formatted the line of text to include quotes around the JSON code: factor1 param1 … Read more

[Solved] Python lambda returns true even with a false condition

[ad_1] You’re not calling your lambda as I’ve explained in my comment, but if you want it inline you can test as: if (lambda x: True == True)(None): print(“yes”) # prints if (lambda x: False == True)(None): print(“yes”) # doesn’t print Or more general, since you’re not actually using any arguments in your lambdas: if … Read more

[Solved] In C++, why should I use “new” if I can directly assign an integer to the pointer without using “new”? [closed]

[ad_1] int *ptr_a = 1;doesn’t create a new int, this creates a pointer ptr_a and assigns a value of 1 to it, meaning that this pointer will point to the address 0x00000001. It’s not an integer. If you try to use the pointer later with *ptr_a = 2, you will get a segmentation fault because … Read more

[Solved] initializing char* a = new char[size] does not work

[ad_1] You are not null-terminating your mString data, but it is expecting to be null-terminated when you pass it to std::cout. Without that terminator, std::cout reads into surrounding memory until it encounters a random null byte (or crashes with a read access error). That is why you are seeing std::cout output random garbage after your … Read more

[Solved] Does this usage of if statements cause undefined behaviour? [closed]

[ad_1] will I get undefined behaviour by not including all 3 variables into every condition? The behaviour of not including all variables into every condition is not undefined by itself. Will every unaccounted for condition go into the else statement? Statement-false (i.e. the statement after the keyword else) is executed if the condition is false. … Read more

[Solved] How do I float this div straightly? [closed]

[ad_1] By align, I assume you mean float. If you look at their markup, you’ll see that they’re using Bootstrap and the alignment is handled using its in-built Grid System, for example: <div class=”row”> <div class=”col-sm-4 col-lg-4 column”></div> <div class=”col-sm-4 col-lg-4 column”></div> <div class=”col-sm-4 col-lg-4 column”></div> </div> 16 [ad_2] solved How do I float this … Read more

[Solved] Retrieve records from Multiple tables using Join

[ad_1] I made the assumption that this is SQL Server and it didn’t look like there was a where clause requirement so I provided this query for that. If you need for mysql please update question. Select co.com_name,c.c_name,b.b_id,b.b_name from Country c inner join Company co on c.c_id = co.c_id inner join branch b on co.com_id … Read more

[Solved] How to delete recent repositories

[ad_1] You can delete your repositories by following this Settings “Scroll Down” Danger Zone Click Delete this repository type{username}/{file} example – echo/data Click I understand the consequences, delete this repository 3 [ad_2] solved How to delete recent repositories