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How would you do a “not in” query with LINQ?
.../blogs/charlie/linq-farm-more-on-set-operators
NOTE: This technique works best for primitive types only, since you have to implement an IEqualityComparer to use the Except method with complex types.
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Remove last item from array
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this is NOT best solution, Best is pop function. Not this.
– Tommix
Jan 11 '16 at 7:50
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How can I pass selected row to commandLink inside dataTable or ui:repeat?
...only requires that the datamodel is preserved for the form submit request. Best is to put the bean in the view scope by @ViewScoped.
You can even pass the entire item object:
<h:commandLink action="#{bean.insert(item)}" value="insert" />
with:
public void insert(Item item) {
// ...
}
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Is there a NumPy function to return the first index of something in an array?
...meit next((idx for idx, val in np.ndenumerate(a) if val==0))
100000 loops, best of 3: 17.6 µs per loop
In [287]: %timeit np.argmax(a==0)
1000 loops, best of 3: 254 µs per loop
In [288]: %timeit np.where(a==0)[0][0]
1000 loops, best of 3: 314 µs per loop
This is an open NumPy GitHub issue.
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Can Objective-C switch on NSString?
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Unfortunately they cannot. This is one of the best and most sought after utilizations of switch statements, so hopefully they hop on the (now) Java (and others) bandwagon!
If you are doing card names, perhaps assign each card object an integer value and switch on that. ...
Add floating point value to android resources/values
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This is the best answer because it enables me to change dynamically dimension values upon screen rotation without having to write code.
– Phileo99
Aug 12 '16 at 23:45
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Flexbox Not Centering Vertically in IE
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For anyone coming here in or after 2019, the best solution by far is the one by @sergey-fedirko requiring no extra HTML elements and no hard heights ;) This one: stackoverflow.com/a/54796082/134120
– AsGoodAsItGets
Mar 12 '19 at 12...
Intelligent way of removing items from a List while enumerating in C#
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The best solution is usually to use the RemoveAll() method:
myList.RemoveAll(x => x.SomeProp == "SomeValue");
Or, if you need certain elements removed:
MyListType[] elems = new[] { elem1, elem2 };
myList.RemoveAll(x => ...
foreach vs someList.ForEach(){}
... Do NOT copypaste this code into your application!
These examples aren't best practice, they are just to demonstrate the differences between ForEach() and foreach.
Removing items from a list within a for loop can have side effects. The most common one is described in the comments to this questio...
What is a plain English explanation of “Big O” notation?
...hing else.
Come back and reread the above when you've read the rest.
The best example of Big-O I can think of is doing arithmetic. Take two numbers (123456 and 789012). The basic arithmetic operations we learned in school were:
addition;
subtraction;
multiplication; and
division.
Each of the...