大约有 30,000 项符合查询结果(耗时:0.0543秒) [XML]

https://stackoverflow.com/ques... 

CSS styling in Django forms

...e'> in Django class MyForm(forms.Form): myfield = forms.CharField(widget=forms.TextInput(attrs={'class' : 'myfieldclass'})) or class MyForm(forms.ModelForm): class Meta: model = MyModel def __init__(self, *args, **kwargs): super(MyForm, self).__init__(*args, **kwa...
https://stackoverflow.com/ques... 

How does the C# compiler detect COM types?

... By no means am I an expert in this, but I stumbled recently on what I think you want: the CoClass attribute class. [System.Runtime.InteropServices.CoClass(typeof(Test))] public interface Dummy { } A coclass supplies concrete ...
https://stackoverflow.com/ques... 

Fastest way to remove first char in a String

...LR 4.6.27322.0, CoreFX 4.7.19.7311), 64bit RyuJIT | Method | Mean | Error | StdDev | |---------------- |---------:|----------:|----------:| | StringSubstring | 19.37 ns | 0.3940 ns | 0.3493 ns | | StringRemove | 22.52 ns | 0.4062 ns | 0.3601 ns | ...
https://stackoverflow.com/ques... 

printf() formatting for hex

...011 §7.21.6.1 The fprintf function ¶6 The flag characters and their meanings are: ... # The result is converted to an "alternative form". ... For x (or X) conversion, a nonzero result has 0x (or 0X) prefixed to it. ... (Emphasis added.) Note that using %#X will use upper-case lette...
https://stackoverflow.com/ques... 

Golang tests in sub-directory

...s not allowed to compute code coverage, which is a pitty. Is this what you mean? – avi.elkharrat Jan 14 at 9:23 1 ...
https://stackoverflow.com/ques... 

Rails auto-assigning id that already exists

... Rails is probably using the built-in PostgreSQL sequence. The idea of a sequence is that it is only used once. The simplest solution is to set the sequence for your company.id column to the highest value in the table with a query like this: SELECT setval('company_id_seq', (SELECT max(...
https://stackoverflow.com/ques... 

.Contains() on a list of custom class objects

... You need to implement IEquatable or override Equals() and GetHashCode() For example: public class CartProduct : IEquatable<CartProduct> { public Int32 ID; public String Name; public Int32 Number; public Decimal CurrentPrice; public CartP...
https://stackoverflow.com/ques... 

Converting an array of objects to ActiveRecord::Relation

...jiSaini I’m unsure of the exact method you’re referring to, please provide doc or source link. Though, if it’s deprecated, not a very viable solution as it’ll likely go away soon. – Andrew Marshall Feb 14 '17 at 14:09 ...
https://stackoverflow.com/ques... 

Android: Test Push Notification online (Google Cloud Messaging) [closed]

... Found a very easy way to do this. Open http://phpfiddle.org/ Paste following php script in box. In php script set API_ACCESS_KEY, set device ids separated by coma. Press F9 or click Run. Have fun ;) <?php // API access key from Google API's Console define( 'API_ACCE...
https://stackoverflow.com/ques... 

Why does Java's Arrays.sort method use two different sorting algorithms for different types?

...n change their relative position during the sort; among other things, this means that if you sort an already sorted array, it may not stay unchanged. Since primitive types have no identity (there is no way to distinguish two ints with the same value), this does not matter for them. But for referenc...