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How to un-submodule a Git submodule?
...n
>&2 echo "Error: No git repository found. Must be run from the root of a git repository"
usage
exit 1
fi
declare path="$(git config -f .gitmodules --get "submodule.${sub}.path")"
declare url="$(git config -f .gitmodules --get "submodule.${sub}.url")"
if [ -z "${path}" ]; then
>...
Declaring variables inside or outside of a loop
...l efficiencies, say about 97% of the time:
premature optimization is the root of all evil"
i.e) situation where a programmer lets performance considerations affect the design of a piece of code. This can result in a design that is not as clean as it could have been or code that is incorrect, bec...
Search for executable files using find command
... so can be
fooled by NFS servers which do UID mapping (or root-squashing), since many systems implement access(2) in the client's kernel and so cannot
make use of the UID mapping information held on the server. Because this test is based only on the result of the access...
Checking images for similarity with OpenCV
...size/orientation )
// Compare two images by getting the L2 error (square-root of sum of squared error).
double getSimilarity( const Mat A, const Mat B ) {
if ( A.rows > 0 && A.rows == B.rows && A.cols > 0 && A.cols == B.cols ) {
// Calculate the L2 relative error ...
What are the differences between Abstract Factory and Factory design patterns?
...hod used to create objects in a class. It's usually added in the aggregate root (The Order class has a method called CreateOrderLine)
Abstract factory
In the example below we design an interface so that we can decouple queue creation from a messaging system and can therefore create implementatio...
Hook up Raspberry Pi via Ethernet to laptop without router? [closed]
...fork to /home/pi/.vnc/xstartup
#!/bin/sh
xrdb $HOME/.Xresources xsetroot -solid grey
autocutsel -fork
#x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
#x-window-manager &
# Fix to make GNOME work
export XKL_XMODMAP_DISABLE=1
/etc/X11/Xsession
...
Isn't it silly that a tiny favicon requires yet another HTTP request? How can I put the favicon into
.../x-icon" /><![endif]--> `
Include the favicon.ico file in your root directory to cover browsers that will request it either way, since for those browsers, if they're already checking no matter what you do, you might as well not waste the HTTP request with a 404 response.
You could als...
C pointers : pointing to an array of fixed size
...er declaration without giving it a further thought. In reality though, the root of the problem lies in the naive malloc approach. The malloc format shown above should be reserved for arrays of run-time size. If the array type has compile-time size, a better way to malloc it would look as follows
ch...
How do I work with a git repository within another repository?
... from within Apache's www folder, you should place a .htaccess file in the root of either the www folder or your project's, with Options +FollowSymLinks in it, or better yet <IfModule mod_rewrite.c>{new line}Options +FollowSymLinks{new line}RewriteEngine on{new line}</IfModule> (replace...
What's the difference between SoftReference and WeakReference in Java?
... system where you'd load a file, parse it, and keep
a SoftReference to the root object of the parsed representation. Next time
you need the file, you'll try to retrieve it through the SoftReference. If
you can retrieve it, you spared yourself another load/parse, and if the GC
cleared it in the meant...