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When does invoking a member function on a null instance result in undefined behavior?
...) and (b) result in undefined behavior. It's always undefined behavior to call a member function through a null pointer. If the function is static, it's technically undefined as well, but there's some dispute.
The first thing to understand is why it's undefined behavior to dereference a null poin...
Using wget to recursively fetch a directory with arbitrary files in it
... --cut-dirs=X (cuts out X directories). it's a bit annoying to have to manually count directories for X..
– lkraav
Nov 8 '10 at 21:49
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Fastest way to determine if record exists
...ECT TOP 1 products.id FROM products WHERE products.id = ?; will outperform all of your suggestions as it will terminate execution after it finds the first record.
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How to call a method after a delay in Android
I want to be able to call the following method after a specified delay.
In objective c there was something like:
31 Answer...
How to work offline with TFS
...no need for 'Go offline' extensions. I read something about a new feature called local workspace for the similar purpose.
Alternatively I had good success with Git-TF. All the goodness of git and when you are ready, you can push it to TFS.
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Django Admin - change header 'Django administration' text
...r app where you define this template before 'django.contrib.admin', in INSTALLED_APPS
– DRC
Jul 27 '13 at 7:08
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When & why to use delegates? [duplicate]
...n, any method that matches this signature, to the delegate and it will be called each time my delegate is called".
Typical use is of course events. All the OnEventX delegate to the methods the user defines.
Delegates are useful to offer to the user of your objects some ability to customize their b...
Best way to track onchange as-you-type in input type=“text”?
In my experience, input type="text" onchange event usually occurs only after you leave ( blur ) the control.
16 Answers...
What's a good (free) visual merge tool for Git? (on windows) [closed]
...on is free), try the tool that is shipped with it: vsDiffMerge.exe. It's really awesome and easy to use.
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How can I load an object into a variable name that I specify from an R data file?
... use an .RDS file:
x <- 5
saveRDS(x, "x.rds")
y <- readRDS("x.rds")
all.equal(x, y)
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