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How to extract the decision rules from scikit-learn decision-tree?
...
This function first starts with the nodes (identified by -1 in the child arrays) and then recursively finds the parents. I call this a node's 'lineage'. Along the way, I grab the values I need to create if/then/else SAS logic:
def get_lineage(tree, feature_names):
left = tree.tree_.chi...
Why doesn't Objective-C support private methods?
...rivate has a private instance method also called doSomething
You create an array containing any number of instances of both AllPublic and HasPrivate
You have the following loop:
for (id anObject in myArray)
[anObject doSomething];
If you ran that loop from within AllPublic, the runtime would ...
How can I convert this foreach code to Parallel.ForEach?
...y codes because of removing duplicate items using HASH lists. with regular array we can not remove duplicates easily:).
– SilverLight
Sep 3 '12 at 20:55
121
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Is there something like Annotation Inheritance in java?
...agic.getAnnotationsOnMethod(fooMethod, Animal.class);
assertEquals(Arrays.asList("Spike", "Jerry"), animalAnnotations.stream().map(Animal::name).collect(toList()));
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How does a garbage collector avoid an infinite loop here?
...am does not support writing
at System.IO.FileStream.Write (System.Byte[] array, Int32 offset, Int32 count) [0x00000] in <filename unknown>:0
at System.IO.StreamWriter.FlushBytes () [0x00000] in <filename unknown>:0
at System.IO.StreamWriter.FlushCore () [0x00000] in <filename ...
list every font a user's browser can display
... {
var nFontLen = dlgHelper.fonts.count;
var rgFonts = new Array();
for ( var i = 1; i < nFontLen + 1; i++ )
rgFonts[i] = dlgHelper.fonts(i);
rgFonts.sort();
for ( var j = 0; j < nFontLen; j++ )
document.write( rgFonts[j] + "<...
Reading 64bit Registry from a 32bit application
... test?.Dump(); // output:
// "elvis" operator for arrays
test?[0].Dump(); // output:
(test?[0]).Dump(); // output: null
// combined with null coalescing operator (brackets required):
(test?[0]??"<null>").Dump(); // output...
Best ways to teach a beginner to program? [closed]
...ike an app which calls the users a random insult at some interval. (Loops, arrays, timers, and random if you make the interval random)
2) Simple Project Once they have a good grasp of language features, you can start a project(simple, fun games work good.). You should try to have the first project...
String concatenation: concat() vs “+” operator
...ble in src.zip of the Sun JDK. You can see that you are building up a char array (resizing as necessary) and then throwing it away when you create the final String. In practice memory allocation is surprisingly fast.
Update: As Pawel Adamski notes, performance has changed in more recent HotSpot. ja...
What's the difference between findAndModify and update in MongoDB?
...ifies only one doc and update() can updates one or more doc, when I use an arrayFilters, findAndModify() updates all matches. Maybe it is a bug??
– WesternGun
Feb 16 '18 at 14:18
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