大约有 48,000 项符合查询结果（耗时：0.0905秒） [XML]
Why are my JavaScript function names clashing?
I wrote the following script just to see what happens when a variable and a function that has a function assigned to it have their names clash:
...
Check if a row exists, otherwise insert
...erbook a flight, as it will insert a new row when there are 10 tickets max and you are booking 20.
share
|
improve this answer
|
follow
|
...
The cast to value type 'Int32' failed because the materialized value is null
...ky abstraction" that yields unexpected behaviour.
One such case is null handling, where there can be unexpected nulls in different places. ...DefaultIfEmpty(0).Sum(0) can help in this (quite simple) case, where there might be no elements and sql's SUM returns null whereas c# expect 0.
A more gene...
Why does PHP consider 0 to be equal to a string?
... this case it is going to cast 'e' to an int. Which is not parsable as one and will become 0. A string '0e' would become 0 and would match!
Use ===
share
|
improve this answer
|
...
Getting a list of values from a list of dicts
...
Here's another way to do it using map() and lambda functions:
>>> map(lambda d: d['value'], l)
where l is the list.
I see this way "sexiest", but I would do it using the list comprehension.
Update:
In case that 'value' might be missing as a key use:
&...
multi-step registration process issues in asp.net mvc (split viewmodels, single model)
... [Required]
public string SomeOtherProperty { get; set; }
...
}
and so on. All those view models could be backed by a main wizard view model:
public class WizardViewModel
{
public Step1ViewModel Step1 { get; set; }
public Step2ViewModel Step2 { get; set; }
...
}
then you co...
Foreign key constraints: When to use ON UPDATE and ON DELETE
...ma using MySQL Workbench, which is pretty cool because you can do diagrams and it converts them :P
3 Answers
...
Add icon to submit button in twitter bootstrap 2
...gs/tag_button.asp for more information on what the button tag is meant for and its cross browser effect. Use this with caution, especially with forms.
– Matenia Rossides
Mar 3 '12 at 7:22
...
Processing $http response in service
...co/edit/TTlbSv?p=preview
The idea is that you work with promises directly and their "then" functions to manipulate and access the asynchronously returned responses.
app.factory('myService', function($http) {
var myService = {
async: function() {
// $http returns a promise, which has a ...
How to drop columns using Rails migration
...
And make sure to do this inside up and down methods, not change, as explained in the answer by @Powers.
– XåpplI'-I0llwlg'I -
Aug 30 '13 at 5:32
...