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How to remove a key from a Python dictionary?
... dictionary, use the two-argument form of dict.pop():
my_dict.pop('key', None)
This will return my_dict[key] if key exists in the dictionary, and None otherwise. If the second parameter is not specified (ie. my_dict.pop('key')) and key does not exist, a KeyError is raised.
To delete a key that i...
How to append data to div using JavaScript?
...is approach will remove all the listeners to the existing elements as mentioned by @BiAiB. So use caution if you are planning to use this version.
var theDiv = document.getElementById("<ID_OF_THE_DIV>");
theDiv.innerHTML += "<YOUR_CONTENT>";
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Initialization of all elements of an array to one default value in C++?
...a single call to fill_nto fill an entire 2D array. You need to loop across one dimension, while filling in the other.
– Evan Teran
Oct 3 '13 at 14:38
8
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Microsoft CDN for jQuery or Google CDN? [closed]
...se to link to your jquery file or any javascript file for that matter. Is one potentially faster than the other? What other factors could play a role in which cdn you decide to use? I know that Microsoft, Yahoo, and Google all have CDN's now.
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Measure the time it takes to execute a t-sql query
...queries using SqlServer 2005. How can I measure how long it takes for each one to run?
6 Answers
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Inserting multiple rows in a single SQL query? [duplicate]
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And please note that the maximum number of rows in one insert statement is 1000.
– cryss
Mar 21 '13 at 13:39
188
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How to add texture to fill colors in ggplot2
...s to fill colors. Is there an official ggplot2 way to do this or does anyone have a hack that they use? By textures I mean things like diagonal bars, reverse diagonal bars, dot patterns, etc that would differentiate fill colors when printed in black and white.
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Why does Python use 'magic methods'?
I've been playing around with Python recently, and one thing I'm finding a bit odd is the extensive use of 'magic methods', e.g. to make its length available, an object implements a method, def __len__(self) , and then it is called when you write len(obj) .
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MySQL Error 1215: Cannot add foreign key constraint
...ing to use as a foreign key are primary keys in their own tables. I have done both of these things, if I'm not mistaken. Any other help you guys could offer?
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jQuery Validate Required Select
...alue of the id attribute. This is a bit confusing since when working in JS one usually works with the id and not the name. See documentation here: "rules (default: rules are read from markup (classes, attributes, data)) Type: Object Key/value pairs defining custom rules. Key is the name of an elemen...