cop | ok cop. The minimalistic auto | Bot library

UPDATED: You dont need an if statement to adjust for different currency, you can just construct the currency parameter

GDB is placing breakpoints based on where the ELF file says the code is. You can see that in your transcript it thinks the _start function in boot.S is at address 0x0. However, when you tell QEMU to load your binary file, you are not doing that in a way that matches what the ELF file says. So the actual code being executed is at an entirely different address, and the breakpoints are not in addresses that match the executing code, so they don't hit. Since you're not compiling the code to be position-independent, when it runs from this address it is working mostly by luck (because even non-position-independent aarch64 code often doesn't have position-dependent instructions in it).

The reason the addresses don't match up is because your ELF file is saying code starts at address 0x0, but you're passing QEMU a binary file to the -kernel option, which means "I am a Linux kernel, boot me the way the Linux kernel boot protocol says to do that" (see https://www.kernel.org/doc/Documentation/arm64/booting.txt). This means a number of things, including that (for the current QEMU implementation -- this isn't strictly mandated by the booting protocol) we load the image to the address 0x80000, and run a bit of stub code generated by QEMU which sets up some registers and jumps to that location. That is why when you set your linker script to link the image to that address it happens to start working.

The solution to this is to make a choice about how you want to boot your guest code:

• You can make it honour the various requirements of the Linux kernel boot protocol, and pass it as a binary file to -kernel
• You can write it to be a pure bare-metal image that includes a vector table at address 0x0, and load it with the QEMU "generic loader", which will take an ELF file and load all its segments as the ELF headers specify. (It is also possible to pass an ELF file to -kernel, but the generic loader makes more sense in this situation.)

QEMU does not support "load this ELF file and start it in the way that the Raspberry Pi firmware supports running an ELF file that it loads from an SD card". So you may need to make some adjustments to bare-metal code tutorials that were designed only for running on real hardware.

(For more info on the various QEMU options for loading guest code, see this answer.)

Update: If a list is preferred: Using str_extract_all:

without entity or class, you have to force the type of value in yaml:

Instead of replacing a string 'inf', you should replace the floating point representation of infinity.

If you pass actual std::optional then yes, there would be no copy. But if you pass just std::string then temporary optional has to be constructed first, resulting in a copy of the string.

Elaborating on my comment,

one way to solve the problem is to calculate the normalized frequency of each cell with respect to that column and store it.

Finally, calculate the mean across each row and append it back into the original dataframe.

You just have to write it as

give your html and body a full browser height: