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Maximum on http header values?
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325
No, HTTP does not define any limit. However most web servers do limit size of headers they acc...
How to pass a user defined argument in scrapy spider
...gs):
self.start_urls = [f'http://www.example.com/{category}'] # py36
super().__init__(**kwargs) # python3
def parse(self, response)
self.log(self.domain) # system
Taken from the Scrapy doc: http://doc.scrapy.org/en/latest/topics/spiders.html#spider-arguments
Update...
Parallel.ForEach vs Task.Factory.StartNew
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305
The first is a much better option.
Parallel.ForEach, internally, uses a Partitioner<T> ...
Count, size, length…too many choices in Ruby?
... an element or predicate and count only those items that match.
> [1,2,3].count{|x| x > 2 }
=> 1
In the case where you don't provide a parameter to count it has basically the same effect as calling length. There can be a performance difference though.
We can see from the source code f...
Which $_SERVER variables are safe?
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edited May 23 '17 at 12:10
Community♦
111 silver badge
answered Jun 25 '11 at 0:12
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How does MongoDB sort records when no sort order is specified?
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StennieStennie
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4
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const vs constexpr on variables
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357
I believe there is a difference. Let's rename them so that we can talk about them more easily...
JPA or JDBC, how are they different?
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243
In layman's terms:
JDBC is a standard for Database Access
JPA is a standard for ORM
JDBC is ...
What are “sugar”, “desugar” terms in context of Java 8?
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136
sugar, in programming, usually refers to those sweet additions, mostly shortcuts, that make som...