ID, id, or Id? [closed]
Id is an abbreviation, not an acronym, so I case it “Id.” UI is an acronym, and acronyms–short ones, anyway–get capitalized: “UI.”
variables
Does Haskell have variables?
Haskell has immutable variables (variables in the math sense) by default: foo x y = x + y * 2 By default variables are not mutable cells. Haskell also has mutable cells though, but you enable them explicitly: > import Data.IORef (newIORef, readIORef, writeIORef) > v <- newIORef 0 > readIORef v 0 > writeIORef … Read more
Velocity: Is a any way to check if variable is defined
#if($hideMyControl) // your code #end If $hideMyControl is defined, your code will execute
Dynamically create variables in PowerShell
Use New-Variable and Get-Variable (mind available options including scopes). E.g. for ($i=1; $i -le 5; $i++) { New-Variable -Name “var$i” -Value $i Get-Variable -Name “var$i” -ValueOnly }
Set fact with dynamic key name in ansible
take a look at this sample playbook: — – hosts: localhost vars: iter: – key: abc val: xyz – key: efg val: uvw tasks: – set_fact: {“{{ item.key }}”:”{{ item.val }}”} with_items: “{{iter}}” – debug: msg=”key={{item.key}}, hostvar={{hostvars[‘localhost’][item.key]}}” with_items: “{{iter}}”
When should an Excel VBA variable be killed or set to Nothing?
VB6/VBA uses deterministic approach to destoying objects. Each object stores number of references to itself. When the number reaches zero, the object is destroyed. Object variables are guaranteed to be cleaned (set to Nothing) when they go out of scope, this decrements the reference counters in their respective objects. No manual action required. There are … Read more
Adding homebrew to PATH
I installed brew in my new Mac M1 and ask me to put /opt/homebrew/bin in the path, so the right command for this case is: echo “export PATH=/opt/homebrew/bin:$PATH” >> ~/.bash_profile && source ~/.bash_profile
Ansible: check if variable equals string
Be careful with a variable called environment, it can cause problems because Ansible uses it internally. I can’t remember if it’s in the docs, but here’s a mailing list thread: https://groups.google.com/forum/#!topic/ansible-project/fP0hX2Za4I0 We use a variable called stage. It looks like you’ll end up with a bunch of these in a row: – include_vars: testing_vars.yml when: … Read more
Environment variable assignment in Docker Compose – colon way
The documentation itself says both methods are working: You can use either an array or a dictionary. Now let’s forgive Docker for failing to use the proper terminology (an array is actually a sequence in YAML, a dictionary is a mapping) and have a look from the YAML perspective: A mapping is part of the … Read more
Is using “is” to name Boolean variables bad practice?
It’s used quite often in a lot of languages, but I don’t know if it can be said with certainty that it’s the preferred method. I think consistency and everyone on a given team using the same standards/styles is the important thing to bear in mind.