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Reading binary file and looping over each byte
...
# Do stuff with byte.
byte = f.read(1)
python 3.8
From now on thanks to := operator the above code can be written in a shorter way.
with open("myfile", "rb") as f:
while (byte := f.read(1)):
# Do stuff with byte.
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Is there a standard function to check for null, undefined, or blank variables in JavaScript?
...n the specification at the ToBoolean section.
Furthermore, if you do not know whether a variable exists (that means, if it was declared) you should check with the typeof operator. For instance
if( typeof foo !== 'undefined' ) {
// foo could get resolved and it's defined
}
If you can be sure ...
What is the Difference Between read() and recv() , and Between send() and write()?
... error. For the caller, the behavior is the same. The caller may not even know anything about datagrams (it may not know that this is a socket and not a file, it may not know that this is a datagram socket and not a stream socket). That the datagram stays pending is implicit knowledge about how IP s...
How do I safely pass objects, especially STL objects, to and from a DLL?
...ta);
swap(first.dataSize, second.dataSize);
}
};
#pragma pack(pop)
Now we can create a DLL that makes use of these pod types. First we need an interface, so we'll only have one method to figure out mangling for.
//CCDLL.h: defines a DLL interface for a pod-based DLL
struct CCDLL_v1
{
virt...
Why would a JavaScript variable start with a dollar sign? [duplicate]
...(_) are permitted anywhere in an IdentifierName.
As such, the $ sign may now be used freely in variable names. Certain frameworks and libraries have their own conventions on the meaning of the symbol, noted in other answers here.
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Mongoose — Force collection name
... This was super helpful. I spent two days trying to query something now.
– Holt Mansfield
Sep 26 '18 at 15:23
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Finding the Eclipse Version Number
...ote: Eclipse3.6 has a brand new cool logo:
And you can see the build Id now being displayed during the loading step of the different plugin.
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Convert MySql DateTime stamp into JavaScript's Date format
Does anyone know how I can take a MySQL datetime data type value, such as YYYY-MM-DD HH:MM:SS and either parse it or convert it to work in JavaScript's Date() function, for example:- Date('YYYY, MM, DD, HH, MM, SS);
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In Python, using argparse, allow only positive integers
... case, you can also use the choices parameter if your upper limit is also known:
parser.add_argument('foo', type=int, choices=xrange(5, 10))
Note: Use range instead of xrange for python 3.x
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Align contents inside a div
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If you don't know the div width, which is often the case, this solution works perfectly in all browsers: matthewjamestaylor.com/blog/…
– Artem Russakovskii
Jan 28 '10 at 8:35
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