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When to use references vs. pointers
... until you can't.
The reason is that pointers make things harder to follow/read, less safe and far more dangerous manipulations than any other constructs.
So the rule of thumb is to use pointers only if there is no other choice.
For example, returning a pointer to an object is a valid option when th...
Section vs Article HTML5
...u have a number of
items of content, each of which would be suitable for reading on their
own, and would make sense to syndicate as separate items in an RSS
feed, then <article> is suitable for marking them up.
In our example, <section id="main"> contains blog entries. Each bl...
In Java, is there a way to write a string literal without having to escape quotes?
...ks inside it. You could escape them all, but it's a pain, and difficult to read.
8 Answers
...
Block Comments in a Shell Script
...estions/32126653/…. That said -- it's running a command (:) that doesn't read its input and always exits with a successful value, and sending the "comment" as input. Not much to it.
– Charles Duffy
Aug 20 '15 at 19:57
...
Is there a way for multiple processes to share a listening socket?
...ERR handle (assuming you didn't want to use it for anything else).
EDIT:
Reading the MDSN library , it appears that WSADuplicateSocket is a more robust or correct mechanism of doing this; it is still nontrivial because the parent/child processes need to work out which handle needs to be duplicated...
Should I prefer pointers or references in member data?
...at it makes the code easier to write it's that it makes the code easier to read. With a reference as a data member you never have to wonder if it can be null at point of use. This means that you can look at code with less context required.
– Len Holgate
Jan 4 '...
set gvim font in .vimrc file
..._gvimrc.
Check the :help .gvimrc for details. In essence, on start-up VIM reads the .vimrc. After that, if GUI is activated, it also reads the .gvimrc. IOW, all VIM general settings should be kept in .vimrc, all GUI specific things in .gvimrc. (But if you do no use console VIM then you can simply f...
What is a race condition?
When writing multithreaded applications, one of the most common problems experienced is race conditions.
18 Answers
...
Validating parameters to a Bash script
...ep -E -q '^[0-9]+$' || die "Numeric argument required, $1 provided"
while read dir
do
[ -d "$dir" ] || die "Directory $dir does not exist"
rm -rf "$dir"
done <<EOF
~/myfolder1/$1/anotherfolder
~/myfolder2/$1/yetanotherfolder
~/myfolder3/$1/thisisafolder
EOF
edit: I missed the par...
MongoDB vs. Cassandra [closed]
...
Lots of reads in every query, fewer regular writes
Both databases perform well on reads where the hot data set fits in memory. Both also emphasize join-less data models (and encourage denormalization instead), and both provide inde...