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How to fix the uninitialized constant Rake::DSL problem on Heroku?
...ake", "0.8.7"
2) Take out a hack that I had previously added to Rakefile based on Stack Overflow question Ruby on Rails and Rake problems: uninitialized constant Rake::DSL:
So, my Rakefile is now back to being the standard Rakefile for my app:
# Add your own tasks in files placed in lib/tasks...
Iterate keys in a C++ map
...
With C++17 you can use a structured binding inside a range-based for loop (adapting John H.'s answer accordingly):
#include <iostream>
#include <map>
int main() {
std::map<std::string, int> myMap;
myMap["one"] = 1;
myMap["two"] = 2;
myMap["three"]...
Mock functions in Go
...ader(pageGetterFunc PageGetter) {
// ...
content := pageGetterFunc(BASE_URL)
// ...
}
Main:
func get_page(url string) string { /* ... */ }
func main() {
downloader(get_page)
}
Test:
func mock_get_page(url string) string {
// mock your 'get_page()' function here
}
func TestDow...
Sequence contains no matching element
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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What is a C++ delegate?
... I've done a version of Elbert Mai's generic callbacks in C++11 based on other ideas seen elsewhere, and it does seem to clear most of the issues you cite in 2). The only remaining nagging issue for me is i'm stuck using a macro in the client code to create the delegates. There is probabl...
Way to get all alphabetic chars in an array in PHP?
...
pckill
3,4803535 silver badges4646 bronze badges
answered Oct 8 '11 at 7:59
Kyle Michael BeckerKyle Michael Becker
...
Command to get nth line of STDOUT
...
Jonathan LefflerJonathan Leffler
641k111111 gold badges777777 silver badges11481148 bronze badges
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Add new row to dataframe, at specific row-index, not appended?
...1:r, ], newrow, existingDF[-(1:r), ]) 801.161 831.7730 854.6320 881.6560 10641.417
Benchmarks
As @MatthewDowle always points out to me, benchmarks need to be examined for the scaling as the size of the problem increases. Here we go then:
benchmarkInsertionSolutions <- function(nrow=5,ncol=4)...
iOS 7 parallax effect in my view controller
...ks @Lucas! I have updated my answer to include the swift sample too. It is based on this one. Feel free to review it and do any changes needed.
– veducm
Jan 12 '15 at 13:41
ad...
How do I time a method's execution in Java?
...uava way to do that (which is arguably awesome):
import com.google.common.base.Stopwatch;
Stopwatch timer = Stopwatch.createStarted();
//method invocation
LOG.info("Method took: " + timer.stop());
The nice thing is that Stopwatch.toString() does a good job of selecting time units for the measure...