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Struct inheritance in C++
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Other than what Alex and Evan have already stated, I would like to add that a C++ struct is not like a C struct.
In C++, a struct can have methods, inheritance, etc. just like a C++ class.
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Error Code: 1005. Can't create table '…' (errno: 150)
I searched for a solution to this problem on the Internet and checked the Stack Overflow questions, but none of the solutions worked for my case.
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Are negative array indexes allowed in C?
I was just reading some code and found that the person was using arr[-2] to access the 2nd element before the arr , like so:
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What is 'Pattern Matching' in functional languages?
I'm reading about functional programming and I've noticed that Pattern Matching is mentioned in many articles as one of the core features of functional languages.
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Subtract days from a date in JavaScript
...ime. So will correctly subtract 7 days time from the Date object. When you convert it to a string in your specified time zone it will correctly show the time for that zone.
– awjr
Oct 2 '15 at 14:40
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Generating PDF files with JavaScript
I’m trying to convert XML data into PDF files from a web page and I was hoping I could do this entirely within JavaScript. I need to be able to draw text, images and simple shapes. I would love to be able to do this entirely in the browser.
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Asynchronously wait for Task to complete with timeout
... completed after X milliseconds, I want to display a message to the user.
And if it hasn't completed after Y milliseconds, I want to automatically request cancellation .
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Find index of a value in an array
...dIndex(words, w => w.IsKey);
That actually gets you the integer index and not the object, regardless of what custom class you have created
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'too many values to unpack', iterating over a dict. key=>string, value=>list
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Can't be iterating directly in dictionary. So you can through converting into tuple.
first_names = ['foo', 'bar']
last_names = ['gravy', 'snowman']
fields = {
'first_names': first_names,
'last_name': last_names,
}
tup_field=tuple(fields.items())
for names in fields.i...
How to clone an InputStream?
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If all you want to do is read the same information more than once, and the input data is small enough to fit into memory, you can copy the data from your InputStream to a ByteArrayOutputStream.
Then you can obtain the associated array of bytes and open as many "cloned" ByteArrayInputStreams...