Is there a way to delete created variables, functions, etc from the memory of the interpreter?

You can delete individual names with del: or you can remove them from the globals() object: This is just an example loop; it defensively only deletes names that do not start with an underscore, making a (not unreasoned) assumption that you only used names without an underscore at the start in your interpreter. You could use a hard-coded … Read more

What does the MOVZBL instruction do in IA-32 AT&T syntax?

AT&T syntax splits the movzx Intel instruction mnemonic into different mnemonics for different source sizes (movzb vs. movzw). In Intel syntax, it’s: i.e. load a byte from memory at eax+ecx+1 and zero-extend to full register. BTW, most GNU tools now have a switch or a config option to prefer Intel syntax. (Such as objdump -Mintel or gcc -S -masm=intel, although the latter affects … Read more

How can I git stash a specific file?

EDIT: Since git 2.13, there is a command to save a specific path to the stash: git stash push <path>. For example: OLD ANSWER: You can do that using git stash –patch (or git stash -p) — you’ll enter interactive mode where you’ll be presented with each hunk that was changed. Use n to skip the files that you don’t want to … Read more

Persistent invalid graphics state error when using ggplot2

I ran into this same error and solved it by running: and then running the plot again. I think the graphics device was messed up earlier somehow by exporting some graphics and it didn’t get reset. This worked for me and it’s simpler than reinstalling ggplot2.

Categories R

How to upgrade pip3?

I want to use python3.5 to develop basically, but many times when I install the module for the python 3.5, it always failed. And the terminal told me that higher version is available, it did not work when I upgrade it.

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