大约有 44,000 项符合查询结果（耗时：0.0875秒） [XML]
TypeError: 'NoneType' object is not iterable in Python
... return empty list at least. This exception never helped anyone in real life other than making us insert few ugly if data is not None: kind of handling.
– nehem
Sep 1 '17 at 6:59
...
Sort objects in an array alphabetically on one property of the array
... to shunt the work of managing sort logic and locale quirks to the system. If doing a case-insensitive sort is normal for the locale, as it is in english, this will be done for you: "Z" > 'a' // false "Z".localeCompare('a') // 1 If you wish to deviate from the locale's default, you can send alo...
What are “signed” cookies in connect/expressjs?
...e out what "signed cookies" actually are.
There isn't much on the net, and if I try this:
4 Answers
...
PHP expresses two different strings to be the same [duplicate]
...063 will both be float(0) because they are too small.
For == in php,
If you compare a number with a string or the comparison involves
numerical strings, then each string is converted to a number and the
comparison performed numerically.
http://php.net/manual/en/language.operators.compari...
How to write log to file
...
os.Open() must have worked differently in the past, but this works for me:
f, err := os.OpenFile("testlogfile", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
if err != nil {
log.Fatalf("error opening file: %v", err)
}
defer f.Close()
log.SetOutput(...
What is the max size of localStorage values?
...ts strings as values, and in order to do that the objects need to be stringified (stored as JSON-string) before they can be stored, is there a defined limitation regarding the length of the values.
...
Make a float only show two decimal places
...
If anyone is curious as to how one does actually get 25.. @"%.f" does the trick. What is written above, does not.
– Alex Gray
Dec 3 '11 at 19:43
...
How can I get the corresponding table header (th) from a table cell (td)?
...').find('> tr > th:eq(' + $td.index() + ')');
Or a little bit simplified
var $th = $td.closest('table').find('th').eq($td.index());
share
|
improve this answer
|
fo...
What's the best practice for primary keys in tables?
... situations.
On surrogate vs natural key, I refer to the rules above. If the natural key is small and will never change it can be used as a primary key. If the natural key is large or likely to change I use surrogate keys. If there is no primary key I still make a surrogate key because experien...
What is the difference between List (of T) and Collection(of T)?
...nd I am worried I'm about to go down a path in design that is irreversible if I don't understand this better. Also, I am using .NET.
...