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Calling C++ class methods via a function pointer
... later call that member function with a specific object?
It's easiest to start with a typedef. For a member function, you add the classname in the type declaration:
typedef void(Dog::*BarkFunction)(void);
Then to invoke the method, you use the ->* operator:
(pDog->*pBark)();
Also, ...
What is the difference between a symbolic link and a hard link?
... give absolute path and not relative path while creating a soft link. i.e.(starting from /root/user/Target_file and not ./Target_file)
Hard Link:
Hard link is more of a mirror copy or multiple paths to the same file. Do something to file1 and it appears in file 2.
Deleting one still keeps the othe...
How to set a Timer in Java?
...
Use this
long startTime = System.currentTimeMillis();
long elapsedTime = 0L.
while (elapsedTime < 2*60*1000) {
//perform db poll/check
elapsedTime = (new Date()).getTime() - startTime;
}
//Throw your exception
...
What is the difference between DAO and Repository patterns?
...sitory pattern are ways of implementing Data Access Layer (DAL). So, let's start with DAL, first.
Object-oriented applications that access a database, must have some logic to handle database access. In order to keep the code clean and modular, it is recommended that database access logic should be ...
Does “git fetch --tags” include “git fetch”?
...
Note: starting with git 1.9/2.0 (Q1 2014), git fetch --tags fetches tags in addition to what are fetched by the same command line without the option.
See commit c5a84e9 by Michael Haggerty (mhagger):
Previously, fetch's "--tag...
Why are static variables considered evil?
...o write "good procedural code".
There are many gotchyas in Java when you start using statics that are not always immediately obvious. For example, if you have two copies of your program running in the same VM, will they shre the static variable's value and mess with the state of each other? Or wha...
What is Java String interning?
...is problem exists even without interning (since GC is non-deterministic to start with etc), but it makes it somewhat worse. It's always a good idea to use char[] instead of String for sensitive text and zero it out as soon as it's no longer needed.
– chris
Apr ...
Requirejs why and when to use shim config
... is that your code doesn't need to care about if/how that happens. Perhaps start a new question for your particular use case?
– explunit
Mar 5 '15 at 14:48
add a comment
...
What are the differences between double-dot “..” and triple-dot “…” in Git commit ranges?
...hanges on the branch containing and up to
the second <commit>, starting at a common ancestor of both
<commit>. "git diff A...B" is equivalent to "git diff
$(git-merge-base A B) B". You can omit any one of <commit>, which
has the same effect as using HEAD ins...
Simple argparse example wanted: 1 argument, 3 results
...ead-simple, it's also all overhead with little power, but it might get you started.
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("a")
args = parser.parse_args()
if args.a == 'magic.name':
print 'You nailed it!'
But this positional argument is now required. If you l...