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Encapsulation vs Abstraction?
...ses on the building blocks of images, such as colour or shapes). The same idea translates to OOP by using an inheritance hierarchy, where more abstract concepts are at the top and more concrete ideas, at the bottom, build upon their abstractions. At its most abstract level there is no implementati...
Constructors in JavaScript objects
... asked about inheritance using this pattern, so here goes:
// It's a good idea to have a utility class to wire up inheritance.
function inherit(cls, superCls) {
// We use an intermediary empty constructor to create an
// inheritance chain, because using the super class' constructor
// m...
How to create a static library with g++?
...d way to regret and I am "perfectly capable of using a shell". It is a bad idea, and I've seen it bite many others who are "perfectly capable of using a shell".
– President James K. Polk
Jan 3 '13 at 21:17
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Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...being a member of WG14, I can't say anything definitive, but I have my own ideas:
It would violate the principle of least surprise - there may be a damned good reason why I want to lay my elements out in a specific order, regardless of whether or not it's the most space-efficient, and I would not ...
How to convert a string or integer to binary in Ruby?
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Picking up on bta's lookup table idea, you can create the lookup table with a block. Values get generated when they are first accessed and stored for later:
>> lookup_table = Hash.new { |h, i| h[i] = i.to_s(2) }
=> {}
>> lookup_table[1]
=>...
How to serialize SqlAlchemy result to JSON?
..."BaseQuery" whenever it hits a relationship with the non-flat methods, any ideas?
– Ben Kilah
Nov 4 '13 at 23:29
1
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Convert ArrayList to String[] array [duplicate]
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FYI, IntelliJ IDEA suggests to change it as list.toArray(new String[0]). I don't know why.
– Jin Kwon
Sep 7 '18 at 5:42
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How to encode the filename parameter of Content-Disposition header in HTTP?
...pdated the code to reflect this. Thank you for the suggestion.
@Thilo: No idea about GoodReader or any other non-browser. You might have some luck using the Android approach.
@Alex Zhukovskiy: I don't know why but as discussed on Connect it doesn't seem to work terribly well.
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Can a foreign key be NULL and/or duplicate?
...ow nulls on the field that has the FK. The null value is separate from the idea of it being an FK.
Whether it is unique or not unique relates to whether the table has a one-one or a one-many relationship to the parent table. Now if you have a one-one relationship, it is possible that you could ha...
SQL JOIN and different types of JOINs
... @KNU The w3fools should give credit from where they have taken the idea for the pictures. See A visualization of SQL joins by Jeff Atwood (yes, the one who co-authored SO) and the linked article by Ligaya Turmelle where Jeff got the idea and explanded it.
– ypercubeᵀ...