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Parallel.ForEach vs Task.Run and Task.WhenAll
What are the differences between using Parallel.ForEach or Task.Run() to start a set of tasks asynchronously?
4 Answers
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What are the advantages of using nullptr?
...d, since it catches only calls with nullptr, not with a null pointer of a different type, like (void*)0. But I can believe it has some uses, even if all it does is save you defining a single-valued place-holder type of your own to mean "none".
– Steve Jessop
De...
Iterate a list with indexes in Python
... first one and a half lines of the question instead of the whole question. If you get to the end of the second line he says he wants to use it instead of for i in range(len(name_of_list)): which is what led me to provide an example using a for instead of what was shown in the first part.
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What does “all” stand for in a makefile?
... executable1 out of file1.o and file3.o
Build executable2 out of file2.o
If you implemented this workflow with makefile, you could make each of the targets separately. For example, if you wrote
make file1.o
it would only build that file, if necessary.
The name of all is not fixed. It's just ...
how to change any data type into a string in python
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str is meant to produce a string representation of the object's data. If you're writing your own class and you want str to work for you, add:
def __str__(self):
return "Some descriptive string"
print str(myObj) will call myObj.__str__().
repr is a similar method, which generally produce...
How to check if an object is nullable?
How do I check if a given object is nullable in other words how to implement the following method...
14 Answers
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$watch'ing for data changes in an Angular directive
... scope.$watch('val', function(newValue, oldValue) {
if (newValue)
console.log("I see a data change!");
}, true);
}
}
});
see Scope. The third parameter of the $watch function enables deep dirty checking if it's set to true.
Take n...
Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...sum + num
num = num + 1
end
print("sum =",sum)
if-else分支
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if age == 40 and sex =="Male" then
print("男人四十一枝花")
elseif age > 60 and sex ~="Female" then
print("old man without co...
Best way to parseDouble with comma as decimal separator?
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This only works if the current default locale happens to use a comma as a decimal separator.
– Joonas Pulakka
Dec 1 '10 at 11:05
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Use HTML5 to resize an image before upload
I have found a few different posts and even questions on stackoverflow answering this question. I am basically implementing this same thing as this post .
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