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C# LINQ find duplicates in List
...ay to solve the problem is to group the elements based on their value, and then pick a representative of the group if there are more than one element in the group. In LINQ, this translates to:
var query = lst.GroupBy(x => x)
.Where(g => g.Count() > 1)
.Select(y ...
How do I create a Python function with optional arguments?
...print values of c,d,e,f
Similarly you could use the kwargs argument and then you could name your parameters.
def myfunc(a,b, *args, **kwargs):
c = kwargs.get('c', None)
d = kwargs.get('d', None)
#etc
myfunc(a,b, c='nick', d='dog', ...)
And then kwargs would have a dictionary ...
Pass props to parent component in React.js
...ct.js?
The parent already has that child prop!: if the child has a prop, then it is because its parent provided that prop to the child! Why do you want the child to pass back the prop to the parent, while the parent obviously already has that prop?
Better implementation
Child: it really does not...
Convert a list of objects to an array of one of the object's properties
...ure to add that namespace by adding a
using System.Linq
to your file - then it will show up with Intellisense.
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Could not find default endpoint element
...Response = productService.GetProducts();
}
Edit
If you are using https then you need to use BasicHttpsBinding rather than BasicHttpBinding.
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Java - escape string to prevent SQL injection
...t, so the real question is does it generate a parameterized query that can then be executed with ExecuteUpdate. If yes, that's good. If no, then it's simply hiding the problem, and you may not have any secure option except redesigning the database layer. Dealing with SQL injection is one of those th...
UnicodeEncodeError: 'latin-1' codec can't encode character
...own concatenating a bunch of files some of which were encoded in cp850 and then transcoding the resultant mess from "latin1" to UTF-8. The draft HTML5 spec is considering sanctifying that very practical browser behaviour (and a whole bunch of similar cases) -- see whatwg.org/specs/web-apps/current-w...
Eclipse returns error message “Java was started but returned exit code = 1”
...ava/jdk1.8.0_45/bin/javaw.exe to eclipse.ini file, requested a restart and then failed to launch. In the past, I'd manually added -vm C:\Program Files\Java\jdk1.8.0_45\bin\javaw.exe. Error occurred because I was left with two '-vm' entries. Removing one of them resolved issue.
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Missing XML comment for publicly visible type or member
...t-click on the service reference, choose "Configure Service Reference...", then change "Access level for generated classes" to Internal.
– Lee Grissom
Jan 17 '13 at 2:37
10
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Handlebars.js Else If
... each case? You may be able to force a CSS style into the data itself, but then you're pushing view-level concerns into your data. I can imagine sensible cases for an if/elseif/endif construct (or even a switch/match).
– Drew Noakes
Dec 6 '12 at 17:26
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