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In the shell, what does “ 2>&1 ” mean?
...nd finally both outputs merged go through a third command filter.
###3 - A word about noclobber option and >| syntax###
That's about overwriting:
While set -o noclobber instruct bash to not overwrite any existing file, the >| syntax let you pass through this limitation:
$ testfile=$(mktemp /tm...
Choice between vector::resize() and vector::reserve()
...
Your wording makes sense to someone already aware of the correct answer, but could easily mislead people needing to ask the question. "resize()...will insert given number of elements to the vector" - only true the first time it's...
RRSet of type CNAME with DNS name foo.com. is not permitted at apex in zone bar.com
...
A CNAME record is not allowed to coexist with any other data. In
other words, if suzy.podunk.xx is an alias for sue.podunk.xx, you
can't also have an MX record for suzy.podunk.edu, or an A record, or
even a TXT record. Especially do not try to combine CNAMEs and NS
records like this!:
...
how do I initialize a float to its max/min value?
...n the comments, min() returns the lowest possible positive value. In other words the positive value closest to 0 that can be represented. The lowest possible value is the negative of the maximum possible value.
There is of course the std::max_element and min_element functions (defined in <algori...
Coroutine vs Continuation vs Generator
... get it wrong and possibly be confused later when she or he meets the same word used for something different.
– Ivancho
Dec 20 '14 at 20:55
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Data Modeling with Kafka? Topics and Partitions
... arrived order. And the topic is composed by one or more queue in a simple word. This is useful for us to model our structure.
Kafka is developed by LinkedIn for log aggregation and delivery. this scene is very good as a example.
The user's events on your web or app can be logged by your Web sever...
“To Do” list before publishing Android app to market [closed]
...ot of very useful features).
Think about the name of the app -> what keywords would you use to search for your app? These keywords should be the name of your app (Google will help you get discovered this way).
Consider including keywords in the app description, but in a descriptive way (make unde...
What is the difference between a string and a byte string?
...;>> print(b'\xe4\xb8\xad\xe6\x96\x87'.decode('utf-8'))
中文
In a word, string is for displaying to humans to read on a computer and byte string is for storing to disk and data transmission.
share
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How to print out the contents of a vector?
... you are using the C++11 standard (or later), then you can use the auto keyword to help the readability:
for (auto i = path.begin(); i != path.end(); ++i)
std::cout << *i << ' ';
But the type of i will be non-const (i.e., the compiler will use std::vector<char>::iterator as th...
What methods of ‘clearfix’ can I use?
...lution does not support for IE 6/7 …on purpose!
Thierry also offers: "A word of caution: if you start a new project from scratch, go for it, but don’t swap this technique with the one you have now, because even though you do not support oldIE, your existing rules prevent collapsing margins."
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