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Xcode Debugger: view value of variable
...reached during the execution of your program you will see on the left side all your variables available at that breakpoint.
You can expand the left arrows on the variable for a greater detail. And even use the search field to isolate that variable you want and see it change on real time as you "S...
Sorting data based on second column of a file
...ered Jun 22 '11 at 11:18
Matt RyallMatt Ryall
8,02355 gold badges2121 silver badges1818 bronze badges
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A generic list of anonymous class
... o, o1 }.ToList();
There are lots of ways of skinning this cat, but basically they'll all use type inference somewhere - which means you've got to be calling a generic method (possibly as an extension method). Another example might be:
public static List<T> CreateList<T>(params T[] el...
Can we write our own iterator in Java?
...s at 0 and 1). The instance will have its owner counter of where it is and all you need to do is to play with hasNext(), which verifies if the current value is not null, and the next(), which will return the instance of your currentIndex. Below is an example of using this API...
public static void ...
C++及Windows异常处理(try，catch; __try,__finally, __except) - C/C++ - ...
C++及Windows异常处理(try，catch; __try,__finally, __except)C++及Windows异常处理(try，catch; __try,__finally; __try, __except)一道笔试题引起的探究题目：
int* p = 0x00000000; // pointer to NULL
puts( "hello ");
__try{
puts( "in try ...
Calculate difference in keys contained in two Python dictionaries
...s:
diff = set(dictb.keys()) - set(dicta.keys())
Here is a class to find all the possibilities: what was added, what was removed, which key-value pairs are the same, and which key-value pairs are changed.
class DictDiffer(object):
"""
Calculate the difference between two dictionaries as:
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What is the difference between Digest and Basic Authentication?
...n-encrypted base64 encoding.
Therefore, Basic Authentication should generally only be used where transport layer security is provided such as https.
See RFC-2617 for all the gory details.
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Possible heap pollution via varargs parameter
...hrow a CCE
B b = listOfBs.get(0);
@SafeVarargs does not prevent this at all. However, there are methods which provably will not pollute the heap, the compiler just can't prove it. Previously, callers of such APIs would get annoying warnings that were completely pointless but had to be suppressed ...
Ruby: Easiest Way to Filter Hash Keys?
...with just the choices in it.
choices = params.select { |key, value| key.to_s.match(/^choice\d+/) }
or you can use delete_if and modify the existing Hash e.g.
params.delete_if { |key, value| !key.to_s.match(/choice\d+/) }
or if it is just the keys and not the values you want then you can do:
p...
When should I use the HashSet type?
... in every respect because they have the same membership, and membership is all that matters.
It's somewhat dangerous to iterate over a HashSet<T> because doing so imposes an order on the items in the set. That order is not really a property of the set. You should not rely on it. If order...