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What is the difference between procedural programming and functional programming? [closed]
...rely functional program always yields the same value for an input, and the order of evaluation is not well-defined; which means that uncertain values like user input or random values are hard to model in purely functional languages.
1 As everything else in this answer, that’s a generalisation. ...
MySQL indexes - what are the best practices?
...tant to understand what's going on.
Broadly speaking, an index imposes an ordering on the rows of a table.
For simplicity's sake, imagine a table is just a big CSV file. Whenever a row is inserted, it's inserted at the end. So the "natural" ordering of the table is just the order in which rows...
Difference between FetchType LAZY and EAGER in Java Persistence API?
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@ADTC In order for lazy loading to work, the JDBC session must still be open when the target entities want to be loaded into the memory by invoking the getter method (e.g. getStudents()), but sometimes this is not possible, because by...
static const vs #define
...#define simply replaces the text. Because doing this can seriously mess up order of operations, I would recommend using a constant variable instead.
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What XML parser should I use in C++? [closed]
... requires you to do a lot of explicit memory allocation of string names in order to build its DOM. It does provide a kind of string buffer, but that still requires a lot of explicit work on your end. It's certainly functional, but it's a pain to use.
It uses the MIT licence. It is a header-only libr...
How to enable MySQL Query Log?
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It's ok to save those settings in conf file in order to be applied every time that MySQL is started, but you don't need to restart MySQL to apply this configuration. You can set it using 'SET global' like others said.
– Angel
Apr 8 '...
Understanding ibeacon distancing
...info form accelerometer to detect whether user is moving (and how fast) in order to reset the previous distribution distance values because they have certainly changed.
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How do I find duplicate values in a table in Oracle?
...= oed.deptid )
group by oed.empid having count(oed.empid) > 1 order by count(oed.empid);
and if such table has primary key then use primary key instead of rowid, e.g id is pk then
select oed.empid, count(oed.empid)
from emp_dept oed
where exists ( select *
from emp...
How can I reliably determine the type of a variable that is declared using var at design time?
...art by transforming it syntactically to
var z = y.Where(foo=>foo.
In order to work out the type of foo we must first know the type of y. So at this point we ask the type determiner "what is the type of y"? It then starts up an expression evaluator which parses x.ToCharArray() and asks "what's...
Should I call Close() or Dispose() for stream objects?
...an call Close() & Dispose() on streams as often as you like and in any order. It won't change the behaviour in any way.
So it comes down to whether or not it is more readable to use Dispose(), Close() and/or using ( ... ) { ... }.
My personal preference is that using ( ... ) { ... } should alw...