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Why doesn't Java allow to throw a checked exception from static initialization block?
... you could surround them with try-catch.
Because you cannot handle any error indicated by a checked exception, it was decided to disallow throwing of checked exceptions static blocks.
The static block must not throw checked exceptions but still allows unchecked/runtime-exceptions to be thrown. But...
What is the difference between Polymer elements and AngularJS directives?
...not the first to ask this question :) Let me clarify a couple of things before getting to your questions.
Polymer's webcomponents.js is a library that contains several polyfills for various W3C APIs that fall under the Web Components umbrella. These are:
Custom Elements
HTML Imports
<template...
Scoping in Python 'for' loops
...asking about Python's scoping rules; I understand generally how scoping works in Python for loops. My question is why the design decisions were made in this way. For example (no pun intended):
...
Determine if ActiveRecord Object is New
How can I check if an ActiveRecord object is new or is already persisted?
2 Answers
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How do I install from a local cache with pip?
...
Updated Answer 19-Nov-15
According to the Pip documentation:
Starting with v6.0, pip provides an on by default cache which functions similarly to that of a web browser. While the cache is on by default and is designed do the right thing by default y...
A fast method to round a double to a 32-bit int explained
...aking the lowest 32 bits of mantissa.
Now, to the magic number; as you correctly stated, 6755399441055744 is 2^51 + 2^52; adding such a number forces the double to go into the "sweet range" between 2^52 and 2^53, which, as explained by Wikipedia here, has an interesting property:
Between 252=...
Does using final for variables in Java improve garbage collection?
... my colleagues and me have a discussion about the usage of the final keyword in Java to improve the garbage collection.
1...
Error in : object of type 'closure' is not subsettable
I was finally able to work out the code for my scraping . It seemed to be working fine and then all of a sudden when I ran it again, I got the following error message:
...
How do I hide an element when printing a web page?
...dia print
{
.no-print, .no-print *
{
display: none !important;
}
}
Then add class='no-print' (or add the no-print class to an existing class statement) in your HTML that you don't want to appear in the printed version, such as your button.
...
NSInvocation for Dummies?
How exactly does NSInvocation work? Is there a good introduction?
4 Answers
4
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