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How can I parse a YAML file from a Linux shell script?
...
Hi vaab - While I'm sure you're correct that many readers would like to parse real YAML files from shell, it's not quite clear (at least to me) what the result would be. With this script I've taken a stab at the problem and defined a subset that has a reasonable mapping into...
Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
...nbaum has also put a lot of effort explaining asynchronicity in the same thread.
@Matt Esch's answer to "Get data from fs.readFile" also explains asynchronicity extremely well in a simple manner.
The answer to the question at hand
Let's trace the common behavior first. In all examples, the oute...
When should you use constexpr capability in C++11?
... something that can be evaluated down to a constant while maintaining good readability and allowing slightly more complex processing than just setting a constant to a number.
It basically provides a good aid to maintainability as it becomes more obvious what you are doing. Take max( a, b ) for exam...
Does anyone know what the new Exit icon is used for when editing storyboards using Xcode 4.5?
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Thanks, I was reading this just to learn what the "Green Exit" was about, only to find out it resolve a problem for me. I had 2 view controllers separated by a TabBar controller and a navigation controller, and "Pop" didn't work to return...
What is the purpose of willSet and didSet in Swift?
...In Swift an iVar or instance variable is named stored property
Example 1 (read only property) - with warning:
var test : Int {
get {
return test
}
}
This will result in a warning because this results in a recursive function call (the getter calls itself).The warning in this case ...
Can I have multiple primary keys in a single table?
...width of our non-clustered leaf nodes, increasing storage requirements and read accesses for seeks and scans of that non-clustered index; and (2) reduces fan-out from our clustered index increasing index height and index size, again increasing reads and storage requirements for our clustered indexes...
How do I force Postgres to use a particular index?
...ate drives
As the documentation admits:
Storage that has a low random read cost relative to sequential, e.g. solid-state drives, might be better modeled with a lower value for random_page_cost.
According to the last point of this slide from a speak at PostgresConf 2018, random_page_cost shoul...
How to send an email with Python?
...ll need
from email.mime.text import MIMEText
# Open a plain text file for reading. For this example, assume that
# the text file contains only ASCII characters.
with open(textfile, 'rb') as fp:
# Create a text/plain message
msg = MIMEText(fp.read())
# me == the sender's email address
# yo...
What is the entry point of swift code execution?
...
You may want to read Files and Initialization
The exception is a special file named “main.swift”, which behaves much
like a playground file, but is built with your app’s source code. The
“main.swift” file can contain top-le...
Understanding MongoDB BSON Document size limit
...g post is that long with
that many comments, I for one am not
going to read it :)
For trackbacks, if you dedicated 1MB
to them, you could easily have more
than 10k (probably closer to 20k)
So except for truly bizarre
situations, it'll work great. And in
the exception case or sp...