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Why is a combiner needed for reduce method that converts type in java 8
...esults in the compilation error you got - argument mismatch; int cannot be converted to java.lang.String. Actually, I think passing 0 as the identity value is also wrong here, since a String is expected (T).
Also note that this version of reduce processes a stream of Ts and returns a T, so you can'...
How can I output a UTF-8 CSV in PHP that Excel will read properly?
...to successfully read, you will need to do two things:
Make sure that you convert your UTF-8 CSV text to UTF-16LE
mb_convert_encoding($csv, 'UTF-16LE', 'UTF-8');
Make sure that you add the UTF-16LE byte order mark to the start of the file
chr(255) . chr(254)
The next problem that appears only...
Python - List of unique dictionaries
... is to use Python's set class. Just add all the elements to the set, then convert the set to a list, and bam the duplicates are gone.
The problem, of course, is that a set() can only contain hashable entries, and a dict is not hashable.
If I had this problem, my solution would be to convert each ...
How to pass an object from one activity to another on Android
...
Using global static variables is not good software engineering practice.
Converting an object's fields into primitive data types can be a hectic job.
Using serializable is OK, but it's not performance-efficient on the Android platform.
Parcelable is specifically designed for Android and you shou...
Dynamic LINQ OrderBy on IEnumerable / IQueryable
...ite, object, object>>[] arr
= Array.ConvertAll(props, GetCallSiteLocked);
accessor = target =>
{
object val = (object)target;
for (int i =...
git-diff to ignore ^M
... \n as a newline character in git-handled repos. There's an option to auto-convert:
$ git config --global core.autocrlf true
Of course, this is said to convert crlf to lf, while you want to convert cr to lf. I hope this still works …
And then convert your files:
# Remove everything from the i...
How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
How do I implement the following (Python pseudocode) in C++?
21 Answers
21
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How can I configure my makefile for debug and release builds?
...to carefully copy paste each new thing for debug and release and carefully convert it.
– BeeOnRope
Jul 31 '18 at 5:04
...
How to create a string with format?
I need to create a string with format which can convert int, long, double etc. types into string. Using Obj-C, I can do it via below way.
...
What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
...ay) { }
void test() {
// This will throw InvalidCastException, cannot convert Int32[] to Int32[*]
foo((int)Array.CreateInstance(typeof(int), new int[] { 1 }, new int[] { 1 }));
}
Validate Parameters
If index comes from a parameter you should always validate them (throwing appropriate Argu...