大约有 11,500 项符合查询结果(耗时:0.0204秒) [XML]
Printing everything except the first field with awk
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Assigning $1 works but it will leave a leading space: awk '{first = $1; $1 = ""; print $0, first; }'
You can also find the number of columns in NF and use that in a loop.
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What is meant by 'first class object'?
... other things, the aspect of JavaScript where functions are 'first class' objects. What does the 'first class' mean in this context, as opposed to other objects?
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How to sort List of objects by some property
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Either make ActiveAlarm implement Comparable<ActiveAlarm> or implement Comparator<ActiveAlarm> in a separate class. Then call:
Collections.sort(list);
or
Collections.sort(list, comparator);
In general, it's a good idea to implement Comparable<T&...
Numpy index slice without losing dimension information
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It's probably easiest to do x[None, 10, :] or equivalently (but more readable) x[np.newaxis, 10, :].
As far as why it's not the default, personally, I find that constantly having arrays with singleton dimensions gets annoying very ...
Java Generics: Cannot cast List to List? [duplicate]
Just come across with this problem:
10 Answers
10
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Difference between partition key, composite key and clustering key in Cassandra?
I have been reading articles around the net to understand the differences between the following key types. But it just seems hard for me to grasp. Examples will definitely help make understanding better.
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How to check for a JSON response using RSpec?
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You can examine the response object and verify that it contains the expected value:
@expected = {
:flashcard => @flashcard,
:lesson => @lesson,
:success => true
}.to_json
get :action # replace with action name / ...
Case-insensitive string comparison in C++ [closed]
What is the best way of doing case-insensitive string comparison in C++ without transforming a string to all uppercase or all lowercase?
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How to get the list of files in a directory in a shell script?
... edited Apr 4 '12 at 8:10
l0b0
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answered Mar 13 '10 at 6:08
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Difference between float and decimal data type
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This is what I found when I had this doubt.
mysql> create table numbers (a decimal(10,2), b float);
mysql> insert into numbers values (100, 100);
mysql> select @a := (a/3), @b := (b/3), @a * 3, @b * 3 from numbers \G
*************************** 1. row ***...
