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Setting an object to null vs Dispose()
...m fascinated by the way the CLR and GC works (I'm working on expanding my knowledge on this by reading CLR via C#, Jon Skeet's books/posts, and more).
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What is the HEAD in git?
...want to commit if you're not on a branch (detached HEAD state) unless you know what you're doing (e.g. are in an interactive rebase).
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What is the point of Lookup?
...ictionary, which doesn't care that two keys correspond to the same value.
Now you want a way of looking up who a given phone number belongs to. You build a Lookup, adding all the KeyValuePairs from your Dictionary, but backwards, with the value as the key and the key as the value. You can now query...
Can I set an opacity only to the background image of a div?
... add a comment or a little update to your question, informing that this is now the new good way to do it. See you in 4 years for a new update ;)
– jj_
Dec 17 '15 at 11:48
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Is there a pattern for initializing objects created via a DI container
...my objects and I want to have some initialization parameters that are not known until run-time:
5 Answers
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Why should C++ programmers minimize use of 'new'?
... it's less limited.
Two key reasons to use dynamic allocation:
You don't know how much memory you need at compile time. For instance, when reading a text file into a string, you usually don't know what size the file has, so you can't decide how much memory to allocate until you run the program.
Y...
List all the modules that are part of a python package?
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@chrisleague I was using ur method with python 2.7, but now I need to move on with python 3.4, so you know that in python 3 pkutil.iter_modules yields (module_finder, name, ispkg) instead of (module_loader, name, ispkg). What can I do to make it work like the previous one ?
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How to declare a structure in a header that is to be used by multiple files in c?
...een both usages (separate names and same names), and none has drawbacks I know of, so using the same name makes reading simpler if you don't use C separate "namespaces" for structs and other symbols.
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Get users by name property using Firebase
...primitives for managing lists of data:
Write to Firebase with a unique, known key:
ref.child('users').child('123').set({ "first_name": "rob", "age": 28 })
Append to lists with an auto-generated key that will automatically sort by time written:
ref.child('users').push({ "first_name": "rob", "age...
Abstract class in Java
...ethod that implements abstractMethod()! So there's no way for the JVM to know what it's supposed to do when it gets something like new ImplementingClass().abstractMethod().
Here's a correct ImplementingClass.
public class ImplementingClass extends AbstractClass
{
public void abstractMethod() ...