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How to flatten tree via LINQ?
...rable<MyNode> e) =>
e.SelectMany(c => Flatten(c.Elements)).Concat(new[] { e });
You can then filter by group using Where(...).
To earn some "points for style", convert Flatten to an extension function in a static class.
public static IEnumerable<MyNode> Flatten(this IEnumer...
Why doesn't nodelist have forEach?
...to mean that the instance was an Array in combination with Array.prototype.concat.
There was a bug in Google's Closure Library which caused almost all Google's apps to fail due to this. The library was updated as soon as this was found but there might still be code out there that makes the same inco...
Why use pointers? [closed]
...inter points to nothing
}
//now, let's allocate some memory
p = new MyType[50000];
if(p) //if the memory was allocated, this test will pass
{
//we can do something with our allocated array
for(size_t i=0; i!=50000; i++)
{
MyType &v = *(p+i); //get a reference to the ith objec...
When is it better to use String.Format vs string concatenation?
...rmance hit, but to be honest it'll be minimal if present at all - and this concatenation version doesn't need to parse the format string.
Format strings are great for purposes of localisation etc, but in a case like this concatenation is simpler and works just as well.
With C# 6
String interpolat...
node.js fs.readdir recursive directory search
... {
walk(file, function(err, res) {
results = results.concat(res);
if (!--pending) done(null, results);
});
} else {
results.push(file);
if (!--pending) done(null, results);
}
});
});
});
};
A serial loop wo...
Merging two arrays in .NET
...
In C# 3.0 you can use LINQ's Concat method to accomplish this easily:
int[] front = { 1, 2, 3, 4 };
int[] back = { 5, 6, 7, 8 };
int[] combined = front.Concat(back).ToArray();
In C# 2.0 you don't have such a direct way, but Array.Copy is probably the ...
How to remove element from array in forEach loop?
...se a string contains 'f', a result is different.
var review = ["of", "concat", "copyWithin", "entries", "every", "fill", "filter", "find", "findIndex", "flatMap", "flatten", "forEach", "includes", "indexOf", "join", "keys", "lastIndexOf", "map", "pop", "push", "reduce", "reduceRight", "reverse"...
GROUP BY to combine/concat a column [duplicate]
...Nice! To elaborate: you are using STUFF() to remove the first comma of the concatenated PageUrl string. The PageUrl string itself is created by using FOR XML PATH(), with an empty path, to concatenate the retrieved PageUrls. Pretty clever :) Some sources: STUFF(): msdn.microsoft.com/en-us/library/ms...
Are JavaScript strings immutable? Do I need a “string builder” in JavaScript?
...eard what Ash mentioned in his answer (that using Array.join is faster for concatenation) so I wanted to test out the different methods of concatenating strings and abstracting the fastest way into a StringBuilder. I wrote some tests to see if this is true (it isn't!).
This was what I believed woul...
Default value in Go's method
...s
// Both parameters are optional, use empty string for default value
func Concat1(a string, b int) string {
if a == "" {
a = "default-a"
}
if b == 0 {
b = 5
}
return fmt.Sprintf("%s%d", a, b)
}
**Option 2:** A single optional parameter at the end
// a is required, b is optional...