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What does the explicit keyword mean?
...class will create a compiler error at the function call DoBar (42). It is now necessary to call for conversion explicitly with DoBar (Foo (42))
The reason you might want to do this is to avoid accidental construction that can hide bugs.
Contrived example:
You have a MyString(int size) class with ...
Why does my 'git branch' have no master?
...e my repo was still empty.) By committing something (any file), the master now came into being, and I was able to go on to doing other things. I tried the things in the other answers, but nothing helped. This one answer here may apply to many people out there. (I read much about hashing in Git. I ...
how do you filter pandas dataframes by multiple columns
To filter a dataframe (df) by a single column, if we consider data with male and females we might:
6 Answers
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Get image data url in JavaScript?
...e need to redownload the image (ie. it's already loaded by the browser, so now I want the content).
8 Answers
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When NOT to use Cassandra?
...gory (Including Cassandra) which are fit for different problem statements. Now lets move to the original questions, and answer them one by one.
When to use Cassandra
Being a part of the NoSQL family, Cassandra offers a solution for problems where one of your requirements is to have a very heavy wr...
PHP mail function doesn't complete sending of e-mail
...e a variety of reasons your script appears to not be sending emails. It's difficult to diagnose these things unless there is an obvious syntax error. Without one you need to run through the checklist below to find any potential pitfalls you may be encountering.
Make sure error reporting is enabled ...
month name to month number and vice versa in python
...
# To get month name
In [2]: datetime.datetime.strftime(datetime.datetime.now(), '%a %b %d, %Y')
Out [2]: 'Thu Aug 10, 2017'
# To get just the month name, %b gives abbrevated form, %B gives full month name
# %b => Jan
# %B => January
dateteime.datetime.strftime(datetime_object, '%b')
...
Which MySQL datatype to use for an IP address? [duplicate]
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@AlexanderFarber Check if IP is in subnet
– Gumbo
Nov 17 '15 at 19:07
1
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Check if all elements in a list are identical
...lso one-liner:
def checkEqual3(lst):
return lst[1:] == lst[:-1]
The difference between the 3 versions are that:
In checkEqual2 the content must be hashable.
checkEqual1 and checkEqual2 can use any iterators, but checkEqual3 must take a sequence input, typically concrete containers like a lis...
typedef fixed length array
... type is an array type, but users of it won't see that it's an array type. If used as a function argument, it will be passed by reference, not by value, and the sizeof for it will then be wrong.
A better solution would be
typedef struct type24 { char x[3]; } type24;
You probably also want to be ...