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What is the difference between related SQLite data-types like INT, INTEGER, SMALLINT and TINYINT?
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SQLite, technically, has no data types, there are storage classes in a manifest typing system, and yeah, it's confusing if you're used to traditional RDBMSes. Everything, internally, is stored as text. Data types are coerced/converted into...
What is Hindley-Milner?
...lner are
It supports polymorphic functions; for example, a function that can give you the length of the list independent of the type of the elements, or a function does a binary-tree lookup independent of the type of keys stored in the tree.
Sometimes a function or value can have more than one typ...
Why use symbols as hash keys in Ruby?
...mbols not only saves time when doing comparisons, but also saves memory, because they are only stored once.
Ruby Symbols are immutable (can't be changed), which makes looking something up much easier
Short(ish) answer:
Using symbols not only saves time when doing comparisons, but also saves memor...
How can I pass selected row to commandLink inside dataTable or ui:repeat?
I'm using Primefaces in a JSF 2 application. I have a <p:dataTable> , and instead of selecting rows, I want the user to be able to directly execute various actions on individual rows. For that, I have several <p:commandLink> s in the last column.
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What is the difference between .text, .value, and .value2?
... displayed on the screen for the cell. Using .Text is usually a bad idea because you could get ####
.Value2 gives you the underlying value of the cell (could be empty, string, error, number (double) or boolean)
.Value gives you the same as .Value2 except if the cell was formatted as currency or da...
How to check if a variable is a dictionary in Python?
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I down-voted this answer because the right answer to the general question is: isinstance(ele, collections.Mapping). It works for dict(), collections.OrderedDict(), and collections.UserDict(). The example in the question is specific enough for Padriac's...
What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
In the Mac and iOS platforms, memory leaks are often caused by unreleased pointers. Traditionally, it has always been of utmost importance to check your allocs, copies and retains to make sure each has a corresponding release message.
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What is the explicit promise construction antipattern and how do I avoid it?
...e code is that is fails to utilize the fact that promises chain.
Promises can chain with .then and you can return promises directly. Your code in getStuffDone can be rewritten as:
function getStuffDone(param){
return myPromiseFn(param+1); // much nicer, right?
}
Promises are all about making...
Does bit-shift depend on endianness?
...o @jww: On PowerPC the vector shifts and rotates are endian sensitive. You can have a value in a vector register and a shift will produce different results on little-endian and big-endian.
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How to increment a pointer address and pointer's value?
... and then get's accessed, with your code, segfault
As there are a lot of cases in here, I might have made some mistake, please correct me if I'm wrong.
EDIT:
So I was wrong, the precedence is a little more complicated than what I wrote, view it here:
http://en.cppreference.com/w/cpp/language/ope...