code check for modifying sequence while iterating over it?

by: Peter Ballard | last post by:

Whew. I hope that title is descriptive! Hi all, The python tutorial tells me "It is not safe to modify the sequence being iterated over in the loop". But what if my list elements are mutable,...

Python

List problems in C code ported to Python

by: Lucas Raab | last post by:

I'm done porting the C code, but now when running the script I continually run into problems with lists. I tried appending and extending the lists, but with no avail. Any help is much appreciated...

Python

Modifying the value of each element stored in a std::vector.

by: Jason Heyes | last post by:

Look at my code: void modify_element(BigType &x) { /* not shown */ } BigType modify_element_copy(BigType x) { modify_element(x);

C / C++

How can I test if an argument is a sequence or a scalar?

by: sandravandale | last post by:

I want to be able to pass a sequence (tuple, or list) of objects to a function, or only one. It's easy enough to do: isinstance(var, (tuple, list)) But I would also like to accept...

Python

Self-modifying HTML code?

by: AES | last post by:

Can an HTML web page dynamically modify its own code? (without resort to Java or any other non-HTML complexities) That is, is there any provision in HTML such that a single "Next" button on a...

HTML / CSS

modifying a list while iterating through

by: dustin.getz | last post by:

consider the following working loop where Packet is a subclass of list, with Packet.insert(index, iterable) inserting each item in iterable into Packet at consecutive indexes starting at index. ...

Python

Bad code or bad compiler?

by: Charles Sullivan | last post by:

A C program with code typified by the following pared-down example has been running after compilation on numerous compilers for several years. However with a fairly recent GCC compiler it results...

C / C++

Sequence iterators with __index__

by: schickb | last post by:

I think it would be useful if iterators on sequences had the __index__ method so that they could be used to slice sequences. I was writing a class and wanted to return a list iterator to callers. ...

Python

Best strategy for finding a pattern in a sequence of integers

by: Slaunger | last post by:

Hi all, I am a Python novice, and I have run into a problem in a project I am working on, which boils down to identifying the patterns in a sequence of integers, for example ..... 1 6 6 1 6 6...

Python

How to turn on java script in a villaon keypad mobile phone

by: Charles Arthur | last post by:

How do i turn on java script on a villaon, callus and itel keypad mobile phone

Java

Basic Javascript concepts

by: aa123db | last post by:

Variable and constants Use var or let for variables and const fror constants. Var foo ='bar'; Let foo ='bar';const baz ='bar'; Functions function $name$ ($parameters$) { } ...

Javascript

Batch import of multiple excel files into the database

by: ryjfgjl | last post by:

If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...

Data Management

Navigating the Data Structures and Algorithms (DSA)

by: BarryA | last post by:

What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...

Algorithms / Advanced Math

Looking to do Android software development, any suggestions? Is flutter better?

by: nemocccc | last post by:

hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?

General

Is that possible of reading the .csv file in column wise and the column have different lengths ?

by: Sonnysonu | last post by:

This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...

C / C++

How to build RAID in BIOS?

by: Hystou | last post by:

There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...

Computer Hardware

Changing the language in Windows 10

by: Hystou | last post by:

Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...

Windows Server

Problem With Comparison Operator <=> in G++

by: Oralloy | last post by:

Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...

C / C++

code check for modifying sequence while iterating over it?

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