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LINQ Aggregate algorithm explained
... carries forward. etc.
Example 1. Summing numbers
var nums = new[]{1,2,3,4};
var sum = nums.Aggregate( (a,b) => a + b);
Console.WriteLine(sum); // output: 10 (1+2+3+4)
This adds 1 and 2 to make 3. Then adds 3 (result of previous) and 3 (next element in sequence) to make 6. Then adds 6 and 4 t...
How can I configure my makefile for debug and release builds?
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194
You can use Target-specific Variable Values. Example:
CXXFLAGS = -g3 -gdwarf2
CCFLAGS = -g3 -gd...
Combine the first two commits of a Git repository?
...econd line of commit B to squash and leave the other lines at pick:
pick f4202da A
squash bea708e B
pick a8c6abc C
This will combine the two commits A and B to one commit AB.
Found in this answer.
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Iterator invalidation rules
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C++17 (All references are from the final working draft of CPP17 - n4659)
Insertion
Sequence Containers
vector: The functions insert, emplace_back, emplace, push_back cause reallocation if the new size is greater than the old capacity. Reallocation invalidates all the references, pointers,...
Indenting #defines
..." and the identifier) you prefer.
http://www.delorie.com/gnu/docs/gcc/cpp_48.html
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find -exec a shell function in Linux?
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14 Answers
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How do I concatenate const/literal strings in C?
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401
In C, "strings" are just plain char arrays. Therefore, you can't directly concatenate them wit...
Remove columns from dataframe where ALL values are NA
...plicated
– Peter.k
Jun 26 '18 at 16:42
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Meaning of $? (dollar question mark) in shell scripts
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214
This is the exit status of the last executed command.
For example the command true always retur...