大约有 40,000 项符合查询结果（耗时：0.0456秒） [XML]
Fastest way to convert Image to Byte array
...
So is there any other method to achieve this goal?
No. In order to convert an image to a byte array you have to specify an image format - just as you have to specify an encoding when you convert text to a byte array.
If you're worried about compression artefacts, pick a lossless fo...
Numeric for loop in Django templates
...
In order to have a python solution, this seemed to me the best one
– artu-hnrq
Jul 7 at 18:51
...
How to declare std::unique_ptr and what is the use of it?
...hen it is done using. If it is not deleted, then memory leakage occurs.
In order to avoid such memory leaks unique_ptr is used, where unique_ptr automatically deletes the space occupied by heapInt when it goes out of scope. So, you need not do delete or free for unique_ptr.
...
Can't find Request.GetOwinContext
...
You may need to add the NuGet package Microsoft.Owin.Host.SystemWeb in order to do this:
HttpContext.Current.GetOwinContext().GetUserManager<ApplicationUserManager>();
share
|
improve th...
Cookies vs. sessions
...
Short answer
Rules ordered by priority:
Rule 1. Never trust user input : cookies are not safe. Use sessions for sensitive data.
Rule 2. If persistent data must remain when the user closes the browser, use cookies.
Rule 3. If persistent data d...
What is a mutex?
...eduling algorithm can swap between threads at any time, you don't know the order in which the threads will attempt to access the shared data. Therefore, the result of the change in data is dependent on the thread scheduling algorithm, i.e. both threads are "racing" to access/change the data.
Real li...
How to delete an SMS from the inbox in Android programmatically?
... broadcasts (android.provider.Telephony.SMS_RECEIVED) are delivered as an "ordered broadcast" — meaning that you can tell the system which components should receive the broadcast first."
This means that you can intercept incoming message and abort broadcasting of it further on.
In your AndroidMa...
What's the best name for a non-mutating “add” method on an immutable collection?
...names. Namely because there is clearly a drive to make types immutable in order to facilitate parallel operations. If you focus on changing the name of methods for collections, the next step will be the mutating method names on every type you use that is immutable.
I think it would be a more val...
Default value of function parameter
...declare a function with no default arguments
void foo(int a, int b);
In order to call that function after such declaration you'll have to specify both arguments explicitly.
Later (further down) in the same translation unit, you can re-declare it again, but this time with one default argument
v...
MongoDb query condition on comparing 2 fields
...
Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
...