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How can I check if a key exists in a dictionary? [duplicate]
Let's say I have an associative array like so: {'key1': 22, 'key2': 42} .
3 Answers
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Why doesn't nodelist have forEach?
I was working on a short script to change <abbr> elements' inner text, but found that nodelist does not have a forEach method. I know that nodelist doesn't inherit from Array , but doesn't it seem like forEach would be a useful method to have? Is there a particular implementation i...
Limit a stream by a predicate
...le, you can't necessarily parallelize such an operation, as you have to look at elements in order.
The API doesn't provide an easy way to do it, but what's probably the simplest way is to take Stream.iterator(), wrap the Iterator to have a "take-while" implementation, and then go back to a Splitera...
Operator Overloading with C# Extension Methods
...C# StringBuilder class. Specifically, given StringBuilder sb , I'd like sb += "text" to become equivalent to sb.Append("text") .
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What is InputStream & Output Stream? Why and when do we use them?
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What is a "Stream" ?
– Koray Tugay
Jun 28 '14 at 15:44
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@KorayTug...
How can a web application send push notifications to iOS devices? [closed]
I'm working on a web app. How can I send push notifications to iOS users when there is new content?
11 Answers
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How to check if a file exists from inside a batch file [duplicate]
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Chris JChris J
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How to remove local (untracked) files from the current Git working tree
How do you delete untracked local files from your current working tree?
38 Answers
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Encode String to UTF-8
...s String to UTF-8 encoding. I have tried it by this way, but it doesn't work:
11 Answers
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Converting a list to a set changes element order
...fast membership tests and preservation of insertion order, you can use the keys of a Python dictionary, which starting from Python 3.7 is guaranteed to preserve the insertion order:
>>> a = dict.fromkeys([1, 2, 20, 6, 210])
>>> b = dict.fromkeys([6, 20, 1])
>>> dict.fromk...