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What are all the common undefined behaviours that a C++ programmer should know about? [closed]
...ty (class, template, enumeration, inline function, static member function, etc.)
Infinite recursion in the instantiation of templates
Calling a function using different parameters or linkage to the parameters and linkage that the function is defined as using.
OOP
Cascading destructions of objects ...
Loop through files in a directory using PowerShell
...r was install something and use it. You could have suggested install Ruby, etc.
– SteveC
Dec 13 '19 at 14:02
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How does origin/HEAD get set?
...commit it points to changes if that branch changes, which might happen on fetch/pull/remote update.)
Edit: The problem discussed below was corrected in Git 1.8.4.3; see this update.
There is a tiny caveat, though. HEAD is a symbolic ref, pointing to a branch instead of directly to a commit, bu...
Why does CSS not support negative padding?
...rgins defined in different units or are affected by a different font-size, etc.
The example below should, ideally have aligned and evenly spaced grey boxes but, sadly they aren't.
body {
font-family: sans-serif;
margin: 2rem;
}
body > * {
margin: 2rem 0 0;
}
body > :first-ch...
Which “href” value should I use for JavaScript links, “#” or “javascript:void(0)”?
...s better, in terms of functionality, page load speed, validation purposes, etc.?
54 Answers
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Generating Random Passwords
...the generated password (e.g. digits only, only uppercase or only lowercase etc.)
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What is 'Currying'?
...parameter, i.e.:-
let papply2 f x y = f x y
let papply3 f x y z = f x y z
etc.
A partial application will take the function and parameter(s) and return a function that requires one or more less parameters, and as the previous two examples show is implemented directly in the standard F# function d...
What is mod_php?
...sudo apt-get install php5
sudo apt-get install libapache2-mod-php5
sudo /etc/init.d/apache2 restart
Otherwise you may compile apache with php: http://dan.drydog.com/apache2php.html
Specifying your server OS will help others to answer more specifically.
...
Rails: FATAL - Peer authentication failed for user (PG::Error)
... x86_64-unk.... # so version is 9.1
Now Open postgres user
vim /etc/postgresql/9.1/main/pg_hba.conf
9.1 is version return form upper command
and replace
local all postgres peer
to
local all postgres ...
Import PEM into Java Key Store
... Hi Bruno, thanks for tips. The real use case is to import all entries of /etc/pki/tls/certs/ca-bundle.crt (RHEL/CentOS) in one go. AFAIK, keytool will only import the first entry. I've seen a number of people do this differently but it usually involves invoking keytool multiple times for each cert...