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Pointers vs. values in parameters and return values
...eful use of pointers to items, items are small enough to copy efficiently, etc.). Sometimes you have to think about or measure the specifics of your situation, but that's a rough guide.
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Is returning null bad design? [closed]
...o when I actually want to return null, I have been naming the method like getCustomerOrNull() to make it explicit. I think a method is named well when the reader doesn't want to look at the implementation.
– Mike Valenty
Aug 17 '09 at 4:23
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How can I expand and collapse a using javascript?
...a container with different sections, so this is not a list like 1, 2, 3... etc. I am listing repeating sections with information. In each section, there is a subsection. The general build is as follows:
...
JRE 1.7 - java version - returns: java/lang/NoClassDefFoundError: java/lang/Object
...ibrary is contained in various JARs, such as rt.jar, deploy.jar, jsse.jar, etc. When the JRE is packaged, these critical JAR files are compressed with Pack200 and stored as rt.pack, deploy.pack, jsse.pack, etc. The Java installer is supposed to uncompress them. If you are experiencing this error, ap...
GitHub: What is a “wip” branch?
... can happen also on any other competitive platform, e.g. Bitbucket, GitLab etc.
It can be the case also with your Git (the VCS, not GitHub, GitLab, etc. - it's not the same) on local machine. In situations when you would like to save your progress on current branch and move to another it can be he...
How do I execute a stored procedure once for each row returned by query?
...ect field1, field2 from sometable where someotherfield is null
open cur
fetch next from cur into @field1, @field2
while @@FETCH_STATUS = 0 BEGIN
--execute your sproc on each row
exec uspYourSproc @field1, @field2
fetch next from cur into @field1, @field2
END
close cur
deallocate cu...
How to do a https request with bad certificate?
...e checks (which has legitimate uses - tunnels, nats, shared cluster certs, etc), while also having something that looks similar but actually completely ignores the certificate check. You need to know that the certificate is valid and signed by a cert that you trust. But in common scenarios, you kn...
Why are unnamed namespaces used and what are their benefits?
...
An anonymous namespace makes the enclosed variables, functions, classes, etc. available only inside that file. In your example it's a way to avoid global variables. There is no runtime or compile time performance difference.
There isn't so much an advantage or disadvantage aside from "do I want...
R object identification
...t(d=1:26, e=letters))
data(cars)
obj <- lm(dist ~ speed, data=cars)
..etc.
If obj is an S3 or S4 object, you can also try methods or showMethods, showClass, etc. Patrick Burns' R Inferno has a pretty good section on this (sec #7).
EDIT: Dirk and Hadley mention str(obj) in their answers. It ...
Why does the order of the loops affect performance when iterating over a 2D array?
...2]
x[0][3]
x[1][0] etc...
Meaning that you're hitting them all in order. Now look at the 1st version. You're doing:
x[0][0]
x[1][0]
x[2][0]
...