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Getting realtime output using subprocess
...e a wrapper script for a command line program (svnadmin verify) that will display a nice progress indicator for the operation. This requires me to be able to see each line of output from the wrapped program as soon as it is output.
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Store boolean value in SQLite
What is the type for a BOOL value in SQLite? I want to store in my table TRUE/FALSE values.
8 Answers
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How to use concerns in Rails 4
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So I found it out by myself. It is actually a pretty simple but powerful concept. It has to do with code reuse as in the example below. Basically, the idea is to extract common and / or context specific chunks of code in order to clean up the models and avo...
Why should I prefer single 'await Task.WhenAll' over multiple awaits?
... should I still use await Task.WhenAll instead of multiple await ? e.g, is DoWork2 below a preferred method to DoWork1 (and why?):
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What are the pros and cons of both Jade and EJS for Node.js templating? [closed]
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I used Jade before. The nice thing about Jade is that you have a shorter syntax which means you can type faster. The block in Jade is pretty powerful which can help me a lot when dealing with complex HTML code.
On the other hand, it is hard to do some simple stuff in Ja...
Why can't decimal numbers be represented exactly in binary?
...ing). The reason you can't represent 0.1 as a binary floating point number is for exactly the same reason. You can represent 3, and 9, and 27 exactly - but not 1/3, 1/9 or 1/27.
The problem is that 3 is a prime number which isn't a factor of 10. That's not an issue when you want to multiply a number...
How to clone ArrayList and also clone its contents?
How can I clone an ArrayList and also clone its items in Java?
21 Answers
21
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How would I create a UIAlertView in Swift?
... but for some reason I can't get the statement right because I'm getting this error:
35 Answers
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HTML5 form required attribute. Set custom validation message?
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Use setCustomValidity:
document.addEventListener("DOMContentLoaded", function() {
var elements = document.getElementsByTagName("INPUT");
for (var i = 0; i < elements.length; i++) {
elements[i].oninvalid = function(e) {
e.target.setCust...
The tilde operator in Python
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It is a unary operator (taking a single argument) that is borrowed from C, where all data types are just different ways of interpreting bytes. It is the "invert" or "complement" operation, in which all the bits of the input dat...