C++ Pointers to Pointers - Finally Understand Double Pointers

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Timestamps:
00:00 - Intro
02:00 - Intro to pointer to pointer
08:04 - Change Pointers in Functions

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You really saved my life! Thanks Caleb!

mitchellxiang

Damn, caleb got in shape! great work!

brajlecz

Hey Caleb, I started coding with arm assembly, and I learned that pretty well. But due to having to switch to C++ for a different project I struggled a lot with the syntax which your videoes helped a lot. Understanding how it works at a low level but not knowing how to do it is really frustrating.

spidermanlift

What's a pirates favorite programming language? C! With Args!

pastasawce

Pointers - while conceptually are not too complicated to understand - in practice blows the hell out of the brains!

dwivedys

on pointer to a pointer, i still dont get why using double pointer. in the outer function, what memory address being changed if the memory address of data is actually pointing to the first memory address of inter array?? it seems for me just one later of pointers. additionally, what would have change if inner function data just have one * and the outter function passed & and just deference inside the outer function? it would present the same results as double pointers?

caiooliveira

08:03 Hi Caleb, could You explain, why we don't need to use a dereference operator (*data[i]) to get the strings in std::cout in this examle? if data[] is an array of pointers, and we get specific value from that array, shouldn't we get the address of the string as a return, rather than the string itself, since we are not using a dereference operator here? Or is do the brackets in the array reference dereference the pointer by definition?

Great tutorials btw.!

boryswwa

Hold on. Pointer to a pointer in the ast example data points to outter data variable which is pointed once deferenced to tmp variable?

Baconc

Actually, reference pointer could be used instead... in the second example.

harrysbidos

The chapters say 'ChatGPT'
Informative video btw! 👍

luigichopper

Well I have no idea why it didn't work just copying the lvgl object pointers into an array - but it did when I made an array of pointers to pointers of lvgl objects?!
static lv_obj_t **ta_time[4] = {&ui_SettingsTime1, &ui_SettingsTime2, &ui_SettingsTime3, &ui_SettingsTime4};

Sydney

Pointers to pointers; it no longer seems pointless.

TheRandomFool

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