Recent searches

No recent searches

Search options

Only available when logged in.
eupolicy.social is one of the many independent Mastodon servers you can use to participate in the fediverse.
This Mastodon server is a friendly and respectful discussion space for people working in areas related to EU policy. When you request to create an account, please tell us something about you.

Administered by:

Server stats:

221
active users

eupolicy.social: AboutProfiles directoryPrivacy policy

Mastodon: AboutGet the appKeyboard shortcutsView source codev4.4.1

#variables

0 posts0 participants0 posts today
FLOX Advocate

updating my presentation for @SeaGL this Friday at 11:30 Seattle time

"Bash Variable Expansion: String Operators and More"

pretalx.seagl.org/2024/talk/QM

SeaGL.org/

#SeaGL #FLOSSconf

pretalx.seagl.orgBash Variable Expansion: String Operators and More SeaGL 2024Bash's parameter ( variable ) expansion has several mechanisms to change values as variables are used. Some change the value assigned to the variable, some only change the value substituted when the variable is used. Parameter expansion is an essential tool in shell scripting and one-liners. This presentation uses examples to demonstrate basic parameter expansion and also 10+ builtin expansions. Parameter expansions include: * using a default value if the variable isn't set * using an alternate value if the variable is set * several ways of changing a substring * counting the length of the value * pattern substitution * capitalizing or lowercasing strings
#shell#bash#variables
Continued thread
pandoc

#Variables, when set, always override #metadata values. That's particularly important to keep in mind when using the `--include-in-header`/`-H` #CLI options, because those set the `header-includes` variable. Setting a `header-includes` *metadata* field won't affect the output in that case.
#pandoc

ᛕᎥᕼᗷᗴᖇᑎᗴ丅Ꭵᑕᔕ

1️⃣ Kihbernetic #System with
2️⃣ fundamental #Processes: a recursive #Autopoietic self-production for growth and learning, and a linear #Allopoietic production of "other things", such as behavior and waste, distributed in
3️⃣ Control #Levels, of #Regulation, immersed in, and dealing with things in the system's environment, #Control for managing the workload of different regulators, and #Guidance to provide long-term goals and preserve the identity of the system, all using
4️⃣ #Variables: sensory #Input of data and other resources, motor #Output of behavior, #Information as the difference that will make a difference in the subsequent (updated) #Knowledge state, all interconnecting
5️⃣ #Functions: the #Control-ed #Reaction to external stimuli, the #Perception of sensory states, the #Prediction of the expected outcome of past behavior, and the repeated #Integration of new information into an updated knowledge state.

*
pandoc

The options `--variable` and `--metadata` are related and do similar things, but they differ in important aspects:
1. #Metadata values are made available to filters and are considered part of the document, while #variables are relevant only for the final rendering step.
2. The values of variables are inserted verbatim in the output, while metadata is escaped. Compare the HTML output of
pandoc --variable pagetitle='<b>x</b>' -s
to
pandoc --metadata pagetitle='<b>x</b>' -s

*
tc

A lot of #Mastodon's #problems could be solved with a modestly powerful #filter, with #variables and #regex and #logic, or at least some of that.

e.g. I'd like to see the new #user #count every day, but not 24 times a day. So I filter out something like (user.bot && post.time > 59), boom, #updates once a day.

#Users could use that to #ban whole #groups of #domains if they wanted, or any post that doesn't have #LaTeX in it, or any post that does, or #gifs, etc.

#suggestions#ideas#feedback
TrendingLive feeds
About