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JavaScript: client-side vs. server-side validation
...error message, and try to hunt down the problem.
(This pain can be eased by having the server re-render the form with the user's original input filled in, but client-side validation is still faster.)
Server Side
You want to validate on the server side because you can protect against the maliciou...
What's wrong with using == to compare floats in Java?
...ichaelPiefel it already says: "depending on the desired precision". Floats by their nature are kind of like physical values: you're only interested in some limited number of positions depending on the total inaccuracy, any differences beyond that are considered moot.
– ivan_poz...
What is the meaning of “… …” token? i.e. double ellipsis operator on parameter pack
... meaning to _ArgTypes..., ..., i.e. a variadic template expansion followed by a C-style varargs list.
Here's a test supporting that theory… I think we have a new winner for worst pseudo-operator ever.
Edit: This does appear to be conformant. §8.3.5/3 describes one way to form the parameter list...
Only one expression can be specified in the select list when the subquery is not introduced with EXI
...r sort; sorting in the ORDER clause is independent of the columns returned by the query.
Try something like this:
select count(distinct dNum)
from myDB.dbo.AQ
where A_ID in
(SELECT DISTINCT TOP (0.1) PERCENT A_ID
FROM myDB.dbo.AQ
WHERE M > 1 and B = 0
GROUP BY A_ID
ORDE...
makefile execute another target
... :
rm -f *.o $(EXEC)
fresh : clean clearscr all
clearscr:
clear
By calling make fresh you get first the clean target, then the clearscreen which runs clear and finally all which does the job.
EDIT Aug 4
What happens in the case of parallel builds with make’s -j option?
There's a way of ...
what is .netrwhist?
.....why does netrw maintain a history file? If I auto-delete it as suggested by your link, what breaks?
– Han Seoul-Oh
Mar 26 at 6:23
1
...
How do you get the “object reference” of an object in java when toString() and hashCode() have been
...says:
As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Jav...
Plotting two variables as lines using ggplot2 on the same graph
...
even colour='var_names' as specified by hadley works fine. but @DaveX - would be more specific if one wants to choose specific colors rather than automatically selected colours by the function.
– I_m_LeMarque
Apr 5 '19 at 9...
Connect Java to a MySQL database
...rly old way of doing things. The better way is to get a DataSource, either by looking one up that your app server container already configured for you:
Context context = new InitialContext();
DataSource dataSource = (DataSource) context.lookup("java:comp/env/jdbc/myDB");
or instantiating and conf...
Structs versus classes
... reason about.
Are objects on the heap and the stack processed equally by the garbage collector?
No, they are not the same because objects on the stack are the roots of the collection. The garbage collector does not need to ever ask "is this thing on the stack alive?" because the answer to tha...