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Can I click a button programmatically for a predefined intent?
...splaying UI.
Can I get the "Send" button click from the MMS-SMSProvider in Android?
3 Answers
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Can I make the foreign key field optional in Django model
... database to allow NULL values for that field. The exception is CharFields and TextFields, which in Django are never saved as NULL. Blank values are stored in the DB as an empty string ('').
– fang_dejavu
Jun 20 '16 at 18:32
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regex to match a single character that is anything but a space
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The following should suffice:
[^ ]
If you want to expand that to anything but white-space (line breaks, tabs, spaces, hard spaces):
[^\s]
or
\S
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arrow operator (->) in function heading
...declaration:
return-type identifier ( argument-declarations... )
and
auto identifier ( argument-declarations... ) -> return_type
They are equivalent. Now when they are equivalent, why do you ever want to use the latter? Well, C++11 introduced this cool decltype thing that lets...
Is it okay to use now?
I'm working on a mobile phone web app and I have several text fields that could benefit from <input type="tel"/> . iPhones will adjust the keyboard for the user, but I'm worried about breaking backwards compatibility. What I'm hoping is that browsers/phone that support this can assist the use...
How to add new line into txt file
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No new line:
File.AppendAllText("file.txt", DateTime.Now.ToString());
and then to get a new line after OK:
File.AppendAllText("file.txt", string.Format("{0}{1}", "OK", Environment.NewLine));
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AngularJS $http, CORS and http authentication
Because using CORS and http authentication with AngularJS can be tricky I edited the question to share one learned lesson. First I want to thank igorzg. His answer helped me a lot. The scenario is the following: You want to send POST request to a different domain with AngularJS $http service. There ...
Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...lues. As I iterate over the data set, I need to detect such missing values and handle them in special ways.
2 Answers
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Best practices around generating OAuth tokens?
...before,
Our first token is an encrypted BLOB with username, token secret and expiration etc. The problem is that we can't revoke tokens without any record on host.
So we changed it to store everything in database and the token is simply an random number used as the key to the database. It has an u...
What is the difference between Class.this and this in Java
...ence a nonstatic InnerClass will always have a reference of its OuterClass and all the
fields and methods of OuterClass is available to the InnerClass.
public static void main(String[] args) {
OuterClass outer_instance = new OuterClass();
OuterClass.InnerClass inner_instance1 = out...