ryanmjacobs
Joined 11 years ago
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582
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156
Member since
Jan 31
notryan.com
webfpga.io
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Comment · 1 year ago
Oh that's embarrassing -- you're right, the first example doesn't make sense. Kinda pointless actually haha
I use it for code like this:
raw = IO.popen(%W[gzip -d -c -- #{path}]){_1.read}
raw = IO.popen(%W[gzip -d -c], in: pipe){_1.read}
raw = IO.popen(%W[git status --porcelain -- #{path}]){_1.read}
Anyway, I find "_1" more eye-pleasing than:
IO.popen(%W[gzip -d -c #{path}]){|io| io.read}Comment · 1 year ago
FYI, one of my favorite Ruby idioms is to capture command output with `open(...){_1.read}`
pp open("|ls -lh /usr/bin/ls"){_1.read}
"-rwxr-xr-x 1 root root 135K Aug 30 04:57 /usr/bin/ls\n"
open("|column -t -s \\t", "w"){_1 << tsv_data}Comment · 1 year ago
Oh damn. I have been using `_1`, `_2`, etc. extensively for years... I didn't know about that footgun.
I'd like know if `it` is merely an alias for `_1`, or if protects from this "arity issue" too.
Comment · 1 year ago
I'm pleasantly surprised to see this improvement:
Tempfile.create(anonymous: true) removes the created temporary file
immediately. So applications don’t need to remove the file.
[Feature #20497]
file = Tempfile.new.tap(&:unlink)
file << "... some really large data to pipe"
system("md5sum", in: file.tap(&:rewind))
On Linux systems, `open(..., O_TMPFILE)` is typically used, which provides additional safety. The created file is initially unnamed (no race condition between `open` and `unlink`).
When I needed safety, my non-portable solution was to use Ruby's syscall feature. (Btw, I love that you can do this.)
require "fcntl"
SYS_OPEN = 2
O_TMPFILE = 0x00410000
O_RDWR = Fcntl::O_RDWR
def tmpfile
mode = O_RDWR | O_TMPFILE
fd = syscall(SYS_OPEN, "/dev/shm", mode, 0644)
IO.for_fd(fd)
end
Linux 3.11 has O_TMPFILE to create an unnamed file.
The current implementation uses it.
Comment · 3 years ago
Rest in peace, Bram. I was introduced to Vim by my father when I was a kid, and have been using it for the past 15 years. Your software has touched many lives.
Comment · 3 years ago
I tried Mint. AFAIK Apple CC doesn't allowing pulling live transactions.
Comment · 3 years ago
Oh nice. This is a very useful tip. I wish I knew that a month ago.
Comment · 3 years ago
I had the same exact situation. I used the Apple card almost exclusively in 2022 because of the 1% card + 2% apple pay rewards.
Doing taxes right now and I spent about 10 minutes manually exporting+emailing OFX/QFX files to myself for Quicken. Kind of a pain. Every other card I have supports automatic data pulling.
Probably will move my main card to something that has automatic integration.
Comment · 3 years ago
Well written story. Worth the read.
Comment · 5 years ago