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Breadth First Vs Depth First
...er.
For depth first use a stack. (The recursive implementation uses the call-stack...)
For breadth-first use a queue.
The recursive implementation looks like
ProcessNode(Node)
Work on the payload Node
Foreach child of Node
ProcessNode(child)
/* Alternate time to work on the pa...
Why should C++ programmers minimize use of 'new'?
... bookkeeping and the next address to allocate is implicit.
In C++, this is called automatic storage because the storage is claimed automatically at the end of scope. As soon as execution of current code block (delimited using {}) is completed, memory for all variables in that block is automatically...
What is the proper way to display the full InnerException?
...
FYI: it will not call a custom ToString methods for inner exceptions as detailed in Why doesn't System.Exception.ToString call virtual ToString for inner exceptions?.
– Jeff B
Feb 3 at 20:27
...
Difference between JSON.stringify and JSON.parse
... @MESSIAH — Yes. It's largely pointless, but might serve as a JSON validator.
– Quentin
Jul 22 '13 at 11:01
11
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What is the fastest way to check if a class has a function defined?
...
Yes, use getattr() to get the attribute, and callable() to verify it is a method:
invert_op = getattr(self, "invert_op", None)
if callable(invert_op):
invert_op(self.path.parent_op)
Note that getattr() normally throws exception when the attribute doesn't exist. H...
Difference between SPI and API?
...
The API is the description of classes/interfaces/methods/... that you call and use to achieve a goal, and
the SPI is the description of classes/interfaces/methods/... that you extend and implement to achieve a goal.
Put differently, the API tells you what a specific class/method does for you,...
Gradle: Execution failed for task ':processDebugManifest'
...ng worked again.
To be clear you need to edit the uses-sdk in the AndroidManifest.xml
<uses-sdk android:minSdkVersion="14" android:targetSdkVersion="16" />
and the android section, particularly minSdkVersion and targetSdkVersion in the build.gradle file
android {
compileSdkVersion ...
Why doesn't std::queue::pop return value.?
... T pop()
{
auto x = elements[top_position];
// TODO: call destructor for elements[top_position] here
--top_position; // alter queue state here
return x; // calls T(const T&) which may throw
}
If the copy constructor of T throws on return, you h...
Mimicking sets in JavaScript?
... the list is a little safer with this:
if (Object.prototype.hasOwnProperty.call(obj, A))
// put code here
}
because of potential conflict between built-in methods and/or properties on the base Object like the constructor property.
Sidebar on ES6: The current working version of ECMAScript 6 or ...
Empty set literal?
...
Why?! Performance is almost identical: $ python3.7 -m timeit 'set()' 2000000 loops, best of 5: 177 nsec per loop $ python3.7 -m timeit '{*()}' 2000000 loops, best of 5: 171 nsec per loop
– ogurets
Mar 3...