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How can I get Visual Studio 2008 Windows Forms designer to render a Form that implements an abstract
I engaged a problem with inherited Controls in Windows Forms and need some advice on it.
10 Answers
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Apache Spark: The number of cores vs. the number of executors
I'm trying to understand the relationship of the number of cores and the number of executors when running a Spark job on YARN.
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Why are Where and Select outperforming just Select?
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Select iterates once over the entire set and, for each item, performs a conditional branch (checking for validity) and a + operation.
Where+Select creates an iterator that skips invalid elements (doesn't yield them), performing a + only on the valid items.
So, the cost ...
Cooler ASCII Spinners? [closed]
In a console app, an ascii spinner can be used, like the GUI wait cursor, to indicate that work is being done. A common spinner cycles through these 4 characters: '|', '/', '-', '\'
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Best way to replace multiple characters in a string?
...s like this: text.replace('&', '\&').replace('#', '\#').
Timings for each function:
a) 1000000 loops, best of 3: 1.47 μs per loop
b) 1000000 loops, best of 3: 1.51 μs per loop
c) 100000 loops, best of 3: 12.3 μs per loop
d) 100000 loops, best of 3: 12 μs per loop
e) 100000 loops, best...
What's the meaning of interface{}?
... the interface that has no methods.
Since there is no implements keyword, all types implement at least zero methods, and satisfying an interface is done automatically, all types satisfy the empty interface.
That means that if you write a function that takes an interface{} value as a paramete...
Correct idiom for managing multiple chained resources in try-with-resources block?
...tax (also known as ARM block ( Automatic Resource Management )) is nice, short and straightforward when using only one AutoCloseable resource. However, I am not sure what is the correct idiom when I need to declare multiple resources that are dependent on each other, for example a FileWriter and...
Check if a string contains a string in C++
...do all the common string operation.In boost,you can just use the boost::algorithm::contains:
#include <string>
#include <boost/algorithm/string.hpp>
int main() {
std::string s("gengjiawen");
std::string t("geng");
bool b = boost::algorithm::contains(s, t);
std::cout <...
Suppress warning CS1998: This async method lacks 'await'
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In the case of throwing NotImplementedException, the procedure is a bit more wordy:
public Task<int> Fail() // note: no "async"
{
var tcs = new TaskCompletionSource<int>();
tcs.SetException(new NotImplementedException());
return tcs.Task;
}
If you have a lot of methods throwin...
CSS customized scroll bar in div
How can I customize a scroll bar via CSS (Cascading Style Sheets) for one div and not the whole page?
18 Answers
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