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Is it a bad practice to catch Throwable?
...lt, user did not enter valid number
}
Now, let's say that getUserInput() blocks for a while, and another thread stops your thread in the worst possible way ( it calls thread.stop() ). Your catch block will catch a ThreadDeath Error. This is super bad. The behavior of your code after catching th...
What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?
...oncurrent modification of the Map from several threads without the need to block them. Collections.synchronizedMap(map) creates a blocking Map which will degrade performance, albeit ensure consistency (if used properly).
Use the second option if you need to ensure data consistency, and each thread ...
throwing exceptions out of a destructor
...ck unwinding (i.e., handling some other throw but not having found a catch block for it yet) in which case std::terminate (not abort) is called instead of raising a (new) exception (or continuing the stack unwinding).
– Marc van Leeuwen
Jun 6 '16 at 9:04
...
Python Progress Bar
... progress >= 1:
progress = 1
status = "Done...\r\n"
block = int(round(barLength*progress))
text = "\rPercent: [{0}] {1}% {2}".format( "#"*block + "-"*(barLength-block), progress*100, status)
sys.stdout.write(text)
sys.stdout.flush()
# update_progress test script
...
Recommended way of making React component/div draggable
... of drag sources and drop targets:
// ItemTypes.js
module.exports = {
BLOCK: 'block',
IMAGE: 'image'
};
(If you don't have multiple data types, this libary may not be for you.)
Then, let's make a very simple draggable component that, when dragged, represents IMAGE:
var { DragDropMixin } = r...
What is a NullReferenceException, and how do I fix it?
...es for debugging and fixing null derefs in iterators
C# supports "iterator blocks" (called "generators" in some other popular languages). Null dereference exceptions can be particularly tricky to debug in iterator blocks because of deferred execution:
public IEnumerable<Frob> GetFrobs(FrobFac...
Skip callbacks on Factory Girl and Rspec
...p using @uberllama's answer about stubbing with Mocha in the after(:build) block. This lets your factory default to running the callback and doesn't require resetting the callback after every usage.
– mpdaugherty
Jul 26 '14 at 3:59
...
Unicode character as bullet for list-item in CSS
...;
text-indent: -1.2em;
}
li:before {
content: "►";
display: block;
float: left;
width: 1.2em;
color: #ff0000;
}
The important thing is to have the character in a floating block with a fixed width so that the text remains aligned if it's too long to fit on a single line.
...
Syntax for if/else condition in SCSS mixin
...idth is not passed, or empty do this
} @else {
display: inline-block;
width: $width;
}
}
I'm not sure of your intended result, but setting a default value should return false.
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How to convert an address into a Google Maps Link (NOT MAP)
...lt;a><address></address></a> which is invalid because block-level elements such as <address> are not permitted within inline elements such as <a>.
Caveat: If your <address> tag contains block-level elements like <p> or <div>, then this JavaScript ...