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How to check if object property exists with a variable holding the property name?
...f myObj has any properties at all, the expresssion would evaluate to true. And myObj[0] may not be the property you are looking for.
– Matt R
Oct 26 '19 at 2:14
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Display number with leading zeros
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In Python 2 (and Python 3) you can do:
print "%02d" % (1,)
Basically % is like printf or sprintf (see docs).
For Python 3.+, the same behavior can also be achieved with format:
print("{:02d}".format(1))
For Python 3.6+ the same...
Is the ternary operator faster than an “if” condition in Java [duplicate]
... readable doesn't mean it matters, perse.
– Jon Egeland
Mar 16 '12 at 22:42
24
@Jon: Yes, it doe...
How do I set the maximum line length in PyCharm?
I am using PyCharm on Windows and want to change the settings to limit the maximum line length to 79 characters, as opposed to the default limit of 120 characters.
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How does Angular $q.when work?
...w does $q.when work in AngularJS?
I'm trying to analyse how $http work and found this:
1 Answer
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Shallow copy of a Map in Java
As I understand it, there are a couple of ways (maybe others as well) to create a shallow copy of a Map in Java:
3 Answer...
“21天教你学会C++” - 创意 - 清泛网 - 专注C/C++及内核技术
...时。我在Amazon.com上进行了如下搜索：
pubdate: after 1992 and title: days and (title: learn or title: teach yourself)
(出版日期：1992年后 and 书名：天 and （书名：学会 or 书名：无师自通）)
我一共得到了248个搜索结果。前面的78个是计算机...
Guid is all 0's (zeros)?
I'm testing out some WCF services that send objects with Guids back and forth. In my web app test code, I'm doing the following:
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String contains - ignore case [duplicate]
...ks if CharSequence contains a search CharSequence irrespective of
case, handling null. Case-insensitivity is defined as by
String.equalsIgnoreCase(String).
A null CharSequence will return false.
This one will be better than regex as regex is always expensive in terms of performance.
For ...
How to convert a boolean array to an int array
I use Scilab, and want to convert an array of booleans into an array of integers:
6 Answers
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