大约有 11,700 项符合查询结果（耗时：0.0563秒） [XML]
In Functional Programming, what is a functor?
...bananas, and we map the same function, we now would have a tree of apples. Etc. tree and list are two Functors here.
– Qqwy
Jun 19 '16 at 21:34
...
How to securely store access token and secret in Android?
I am going to use oAuth to fetch mails and contacts from google. I don't want to ask the user each time to log in to obtain an access token and secret. From what I understood, I need to store them with my application either in a database or SharedPreferences . But I am a bit worried about security ...
Is there a difference between copy initialization and direct initialization?
...ed temporary. Any members of c1 that have pod-type (or members of members, etc., etc.) may not be initialized if the user supplied default constructors (if any) do not explicitly initialize them. For c2, it depends on whether there is a user supplied copy constructor and whether that appropriately i...
Change column type from string to float in Pandas
... data type you can give your datatype .what do you want like str,float,int etc.
share
|
improve this answer
|
follow
|
...
How to get current CPU and RAM usage in Python?
...d way of getting current system status (current CPU, RAM, free disk space, etc.) in Python? Bonus points for *nix and Windows platforms.
...
How to deploy correctly when using Composer's develop / production switch?
...hat only make sense in development, like tests, fake-data-tools, debugger, etc.
5 Answers
...
REST API 404: Bad URI, or Missing Resource?
...ifference, but that doesn't imply that an empty string is an error. To stretch the analogy: You could have a method String getName() that has an implementation like this: return this.name == null ? "" : this.name. That's not incorrect unless you want the client to know that this.name is null.
...
Qt events and signal/slots
...e the button should function like a normal QPushButton (it can be clicked, etc). In Qt this is done by creating your own little reusable "component" (subclass of QPushButton), which reimplements QWidget::keyPressEvent. Pseudocode:
class NumericButton extends QPushButton
private void addToNumber...
Create a custom View by inflating a layout?
...
Yes you can do this. RelativeLayout, LinearLayout, etc are Views so a custom layout is a custom view. Just something to consider because if you wanted to create a custom layout you could.
What you want to do is create a Compound Control. You'll create a subclass of Relativ...
Javascript when to use prototypes
...{ ... },
css: function() { ... },
animate: function() { ... },
// etc...
};
But that would mean that every jQuery object in memory would have dozens of named slots containing the same methods, over and over.
Instead, those methods are defined on a prototype and all jQuery objects "inheri...