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django MultiValueDictKeyError error, how do I deal with it
... on standard dicts and is a way to fetch a value while providing a default if it does not exist.
is_private = request.POST.get('is_private', False)
Generally,
my_var = dict.get(<key>, <default>)
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Strings as Primary Keys in SQL Database [closed]
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Technically yes, but if a string makes sense to be the primary key then you should probably use it. This all depends on the size of the table you're making it for and the length of the string that is going to be the primary key (longer strings =...
Capturing “Delete” Keypress with jQuery
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$('html').keyup(function(e){
if(e.keyCode == 46) {
alert('Delete key released');
}
});
Source: javascript char codes key codes from www.cambiaresearch.com
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Java array reflection: isArray vs. instanceof
Is there a preference or behavior difference between using:
8 Answers
8
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printf format specifiers for uint32_t and size_t
... -1, sorry it's not portable. All that's needed is that the format specifiers and the types agree, and you can always cast to make that true. long is at least 32bits, so %lu together with (unsigned long)k is always correct. size_t is trickier, which is why %zu was added in C99. If you can't use ...
Android Task Affinity Explanation
...ndroid application has Activities that form a stack like a deck of cards. If you start an android application, and start five activities A,B,C,D,E. They will form a stack
E - chat view
D - weather screen
C - map view
B - weather screen
A - login screen
E was the last Activity to be st...
URL encode sees “&” (ampersand) as “&” HTML entity
I am encoding a string that will be passed in a URL (via GET). But if I use escape , encodeURI or encodeURIComponent , & will be replaced with %26amp%3B , but I want it to be replaced with %26 . What am I doing wrong?
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Why am I getting an OPTIONS request instead of a GET request?
...have implications to user data. In particular, a request is
preflighted if:
It uses methods other than GET or POST. Also, if POST is used to send
request data with a Content-Type other than
application/x-www-form-urlencoded, multipart/form-data, or text/plain,
e.g. if the POST requ...
Why should Java ThreadLocal variables be static
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Because if it were an instance level field, then it would actually be "Per Thread - Per Instance", not just a guaranteed "Per Thread." That isn't normally the semantic you're looking for.
Usually it's holding something like objec...
HTML Submit-button: Different value / button-text?
... 'add tag' , however, the web page is in Swedish, so I'd like to have a different button text .
5 Answers
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