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How to implement __iter__(self) for a container object (Python)
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I normally would use a generator function. Each time you use a yield statement, it will add an item to the sequence.
The following will create an iterator that yields five, and then every item in some_list.
def __iter__(self):
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html5 - canvas element - Multiple layers
...element.
https://github.com/federicojacobi/layeredCanvas
I intend to add extra capabilities, but for now it will do.
You can do multiple functions and call them in order to "fake" layers.
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innerText vs innerHTML vs label vs text vs textContent vs outerText
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text and label remove extra spaces. I got these results when querying options in a dropdown:
e.textContent = "A B C D "
e.text = "A B C D"
e.label = "A B C D"
s...
What is a CSRF token ? What is its importance and how does it work?
...s where the CSRF token comes in. A CSRF token is a random,
hard-to-guess string. On a page with a form you want to protect, the
server would generate a random string, the CSRF token, add it to the
form as a hidden field and also remember it somehow, either by storing
it in the session or by ...
Should each and every table have a primary key?
... creates a primary key if you didn't specify it explicitly, thus making an extra column you don't have access to.
Note that a primary key can be composite.
If you have a many-to-many link table, you create the primary key on all fields involved in the link. Thus you ensure that you don't have two ...
What are some better ways to avoid the do-while(0); hack in C++?
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Try to extract the code into a separate function (or perhaps more than one). Then return from the function if the check fails.
If it's too tightly coupled with the surrounding code to do that, and you can't find a way to reduce the ...
Elasticsearch query to return all records
I have a small database in Elasticsearch and for testing purposes would like to pull all records back. I am attempting to use a URL of the form...
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Remove padding or margins from Google Charts
...ifferent styles. For instance, here is a version that removes most of the extra blank space by setting the chartArea.width to 100% and chartArea.height to 80% and moving the legend.position to bottom:
// Set chart options
var options = {'title': 'How Much Pizza I Ate Last Night',
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What do you call the -> operator in Ruby?
...t simply do a drop-in replacement in all cases (because sometimes you need extra parentheses for lambda).
– Kelvin
Mar 15 '17 at 22:16
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Difference between java.io.PrintWriter and java.io.BufferedWriter?
...s (and where long-term reliability isn't an issue).
I'm not sure why the "extra formatting abilities" and "don't swallow exceptions" aspects are bundled into the same class - formatting is obviously useful in many places where you don't want exceptions to be swallowed. It would be nice to see Buffe...