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Create a unique number with javascript time
... creating a number using time. The number would be made up of the four digit year, two digit month, two digit day, two digit hour, two digit minute, two digit second, and three digit millisecond. So it would look something like this: 20111104103912732 ... this would give enough certainty of a uniq...
What is the use of hashCode in Java?
... is the address of the element inside the set/map.
When you do contains() it will take the hash code of the element, then look for the bucket where hash code points to. If more than 1 element is found in the same bucket (multiple objects can have the same hash code), then it uses the equals() metho...
How can I search for a multiline pattern in a file?
...ring pattern. The first solution that comes to mind is using find piped with xargs grep :
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Pretty-print an entire Pandas Series / DataFrame
I work with Series and DataFrames on the terminal a lot. The default __repr__ for a Series returns a reduced sample, with some head and tail values, but the rest missing.
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C++ template constructor
I wish to have a non-template class with a template constructor with no arguments.
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How to generate random number in Bash?
How to generate a random number within a range in Bash?
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How to extract img src, title and alt from html using php? [duplicate]
I would like to create a page where all images which reside on my website are listed with title and alternative representation.
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Security of REST authentication schemes
..., SSL alone is NOT a viable authentication mechanism for a REST API. SSL without client authc only authenticates the server, which is irrelevant for most REST APIs because you really want to authenticate the client.
If you don't use TLS client authentication, you'll need to use something like a ...
'Incomplete final line' warning when trying to read a .csv file into R
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The message indicates that the last line of the file doesn't end with an End Of Line (EOL) character (linefeed (\n) or carriage return+linefeed (\r\n)). The original intention of this message was to warn you that the file may be incomplete; most datafiles have an EOL character as the very l...
How to avoid isset() and empty()
... the E_NOTICE error level, because the existence of variables is not explicitly checked using isset() and consorts.
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