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How do I implement basic “Long Polling”?
...n find lots of information on how Long Polling works (For example, this , and this ), but no simple examples of how to implement this in code.
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How to remove the default link color of the html hyperlink 'a' tag?
...default color of the html element is black. The default colour of the body and of a paragraph is inherited. This
<a href="http://example.com">link</a> would normally take on the default link or visited color, but has been styled to inherit the color from the paragraph.</p>
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How to see the changes in a Git commit?
When I do git diff COMMIT I see the changes between that commit and HEAD (as far as I know), but I would like to see the changes that were made by that single commit.
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Where are my postgres *.conf files?
...e it because I can't find config files. Searched through entire hard drive and found only samples like pg_hba.conf.sample
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C# “as” cast vs classic cast [duplicate]
... thrown. With the as method, it results in null, which can be checked for, and avoid an exception being thrown.
Also, you can only use as with reference types, so if you are typecasting to a value type, you must still use the "classic" method.
Note:
The as method can only be used for types that c...
Determine the data types of a data frame's columns
I'm using R and have loaded data into a dataframe using read.csv() . How do I determine the data type of each column in the data frame?
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SQL query to find record with ID not in another table
I have two tables with binding primary key in database and I desire to find a disjoint set between them. For example,
6 Ans...
Reading/writing an INI file
Is there any class in the .NET framework that can read/write standard .ini files:
16 Answers
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How to get current CPU and RAM usage in Python?
...(current CPU, RAM, free disk space, etc.) in Python? Bonus points for *nix and Windows platforms.
15 Answers
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Struct Constructor in C++?
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In C++ the only difference between a class and a struct is that members and base classes are private by default in classes, whereas they are public by default in structs.
So structs can have constructors, and the syntax is the same as for classes.
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