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What is the standard naming convention for html/css ids and classes?
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There isn't one.
I use underscores all the time, due to hyphens messing up the syntax highlighting of my text editor (Gedit), but that's personal preference.
I've seen all these conventions used all over the place. Use the one that you think is best - the one that lo...
Difference between viewDidLoad and viewDidAppear
...ar is called when the view is actually visible, and can be called multiple times during the lifecycle of a View Controller (for instance, when a Modal View Controller is dismissed and the view becomes visible again). This is where you want to perform any layout actions or do any drawing in the UI - ...
Is it safe to assume a GUID will always be unique?
...ou aren't generating them randomly, but are e.g. using the MAC-address-and-time-stamp algorithm, then they're also going to be unique, as MAC addresses are unique among computers and time stamps are unique on your computer.
Edit 1: To answer your bonus question, the optimal way to test a set of GUI...
How are Python's Built In Dictionaries Implemented?
...official in Python 3.7.
Python's Dictionaries are Hash Tables
For a long time, it worked exactly like this. Python would preallocate 8 empty rows and use the hash to determine where to stick the key-value pair. For example, if the hash for the key ended in 001, it would stick it in the 1 (i.e. 2nd...
How to map and remove nil values in Ruby
...enum = 1.upto(1_000)
Benchmark.bmbm do |x|
x.report("select + map") { N.times { enum.select { |i| i.even? }.map{|i| i + 1} } }
x.report("map + compact") { N.times { enum.map { |i| i + 1 if i.even? }.compact } }
x.report("filter_map") { N.times { enum.filter_map { |i| i + 1 if i.even? } } }...
How to “set a breakpoint in malloc_error_break to debug”
I'm getting lots of console outputs like this without my application crashing:
5 Answers
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Java Enum Methods - return opposite direction enum
...ST, SOUTH, WEST;
// cached values to avoid recreating such array each time method is called
private static final Direction[] VALUES = values();
public Direction getOppositeDirection() {
return VALUES[(ordinal() + 2) % 4];
}
}
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Entity Framework DateTime and UTC
...ork (I am using the Code First Approach with CTP5 currently) store all DateTime values as UTC in the database?
13 Answers
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Parse DateTime string in JavaScript
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If you have date both TIME like this: "2014-05-20T16:43:56.71-06:00" var partesFecha = solicitud.CreatedDate.split("T")[0].split("-"); var createdDate = new Date(partesFecha[0], (partesFecha[1] - 1), partesFecha[2]); First extract date befor...
Why catch and rethrow an exception in C#?
...tion filtering further up the call stack unnecessarily difficult. The only time you should catch one type of exception and throw another is when you are implementing an abstraction layer and you need to transform a provider-specific exception type (e.g. SqlException versus XmlException) into a more ...