大约有 43,000 项符合查询结果（耗时：0.0354秒） [XML]
Difference between classification and clustering in data mining? [closed]
...ere would be a lot of answers because the heights can be 5.0, 5.01, 5.011, etc. But a simple classification like types of light sabers (red,blue.green) would have very limited answers. Infact they can be represented with simple numbers. Red can be 0 , Blue can be 1 and Green can be 2.
If you know ...
How to Customize a Progress Bar In Android
.../res/android">
<!-- Define the background properties like color etc -->
<item android:id="@android:id/background">
<shape>
<gradient
android:startColor="#000001"
android:centerColor="#0b131e"
android:centerY...
Why do std::shared_ptr work
... it calls that stored function and that will call the deleter.
A simple sketch of the type erasure that is going on simplified with std::function, and avoiding all reference counting and other issues can be seen here:
template <typename T>
void delete_deleter( void * p ) {
delete static_c...
What are the dangers when creating a thread with a stack size of 50x the default?
... know how to predict it - permissions, GC (which needs to scan the stack), etc - all could be impacted. I would be very tempted to use unmanaged memory instead:
var ptr = Marshal.AllocHGlobal(sizeBytes);
try
{
float* x = (float*)ptr;
DoWork(x);
}
finally
{
Marshal.FreeHGlobal(ptr);
}
...
Should I use #define, enum or const?
...oSomething(RecordType p_eMyEnum)
{
if(p_eMyEnum == xNew)
{
// etc.
}
}
As you see, your enum is polluting the global namespace.
If you put this enum in an namespace, you'll have something like:
namespace RecordType {
enum Value { xNew = 1, xDeleted, xModified = 4, xExisting = 8...
Add missing dates to pandas dataframe
...efore merging two dataframes of different index length where joins, merges etc. almost always leads to errors such as a column full of NaNs.
– user3661992
Sep 7 at 10:24
add a...
Why is the Java main method static?
...when we have to bridge the virtual machine world, and the world of C, C++, etc... The reverse is also true - it is not possible (at least to my knowledge) to actually get a JVM running without using JNI.
Basically, java.exe is a super simple C application that parses the command line, creates a n...
What is the most efficient way to deep clone an object in JavaScript?
...oning objects is not trivial (complex types, circular references, function etc.), most major libraries provide function to clone objects. Don't reinvent the wheel - if you're already using a library, check if it has an object cloning function. For example,
lodash - cloneDeep; can be imported separ...
What is the difference between a field and a property?
...e can put logic in the Property also allows us to perform validation logic etc if we need it.
C# 3 has the possibly confusing notion of autoproperties. This allows us to simply define the Property and the C#3 compiler will generate the private field for us.
public class Person
{
private string _...
How do I view all commits for a specific day?
...-until/--before parameters can also take stuff like 3 days ago, yesterday, etc.
share
|
improve this answer
|
follow
|
...