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Recursive lambda functions in C++11
...;
sum = [term,next,&sum](int a, int b)->int {
if(a>b)
return 0;
else
return term(a) + sum(next(a),b);
};
Obviously, this wouldn't work with auto. Recursive lambda functions work perfectly well (at least they do in MSVC, where I have experience with them), it's just that they are...
Converting a List to a comma separated string
...
190
List<int> list = ...;
string.Join(",", list.Select(n => n.ToString()).ToArray())
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Can you get the column names from a SqlDataReader?
...= cmd.ExecuteReader();
var columns = new List<string>();
for(int i=0;i<reader.FieldCount;i++)
{
columns.Add(reader.GetName(i));
}
or
var columns = Enumerable.Range(0, reader.FieldCount).Select(reader.GetName).ToList();
...
iPhone Keyboard Covers UITextField
...
290
The usual solution is to slide the field (and everything above it) up with an animation, and the...
Spark java.lang.OutOfMemoryError: Java heap space
...uge amounts of data you may need way more than 4 per CPU, I've had to use 8000 partitions in some cases!
Decrease the fraction of memory reserved for caching, using spark.storage.memoryFraction. If you don't use cache() or persist in your code, this might as well be 0. It's default is 0.6, which me...
Uploading both data and files in one form using Ajax?
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10 Answers
10
Active
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Why shouldn't all functions be async by default?
...ippert
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Is there a better way to run a command N times in bash?
...
for run in {1..10}
do
command
done
Or as a one-liner for those that want to copy and paste easily:
for run in {1..10}; do command; done
share
|
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How do I get the file extension of a file in Java?
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30 Answers
30
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