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In a Git repository, how to properly rename a directory?
...CaseSensitive, you can do this way: git mv casesensitive Temp and then git mv Temp CaseSensitive
– ViliusK
Feb 9 '14 at 21:03
...
How to implement the factory method pattern in C++ correctly
...right place to do it. If you really need another class to perform the job, then it should be a helper class that is used from the constructor anyway.
Vec2(float x, float y);
Vec2(float angle, float magnitude); // not a valid overload!
There is an easy workaround for this:
struct Cartesian {
in...
How to check if there's nothing to be committed in the current branch?
...es any output, no parsing needed):
if [ -n "$(git status --porcelain)" ]; then
echo "there are changes";
else
echo "no changes";
fi
Please note that you have to quote the string to test, i.e. the output of git status --porcelain. For more hints about test constructs, refer to the Advanced Bas...
How does Python's super() work with multiple inheritance?
... will start by looking at First, and, if First doesn't have the attribute, then it will look at Second.
This situation becomes more complex when inheritance starts crossing paths (for example if First inherited from Second). Read the link above for more details, but, in a nutshell, Python will try ...
TCP vs UDP on video stream
...know, it might not be well supported yet) support multicast in it self, so then shouldn't TCP over IPv6 also?
– Alxandr
May 31 '11 at 12:29
1
...
jquery .html() vs .append()
... call it x. x's innerHTML is set to the string of HTML that you've passed. Then jQuery will transfer each of the produced nodes (that is, x's childNodes) over to a newly created document fragment, which it will then cache for next time. It will then return the fragment's childNodes as a fresh DOM co...
When do you use map vs flatMap in RxJava?
...ted further (only once) down.
flatMap - supplied function accepts an item then returns an "Observable", meaning each item of the new "Observable" will be emitted separately further down.
May be code will clear things up for you:
Observable.just("item1").map( str -> {
System.out.println("i...
Why we should not use protected static in java
...tract class that was designed to be extended and the extending class could then modify the behavior using constants defined in the original. That sort of arrangement would most likely end up very messy though and indicates weakness in the design of the classes.
In most cases it would be better to ...
Can one AngularJS controller call another?
... two controllers (or more) and they both get one identical/shared service. Then, you have multiple ways how to communicate, some of them you mentioned. I would decide based on your specific use case. You can put the shared logic/state into the service and both controllers only delegate to that servi...
How to replace a hash key with another key
...
If all the keys are strings and all of them have the underscore prefix, then you can patch up the hash in place with this:
h.keys.each { |k| h[k[1, k.length - 1]] = h[k]; h.delete(k) }
The k[1, k.length - 1] bit grabs all of k except the first character. If you want a copy, then:
new_h = Hash...