大约有 40,740 项符合查询结果（耗时：0.0464秒） [XML]
How do I send a POST request as a JSON?
I want to send a POST request, but one of the fields should be a list of numbers. How can I do that ? (JSON?)
8 Answers
...
How to get the index of an item in a list in a single step?
How can I find the index of an item in a list without looping through it?
7 Answers
7
...
Truncating all tables in a Postgres database
I regularly need to delete all the data from my PostgreSQL database before a rebuild. How would I do this directly in SQL?
...
How do I move a redis database from one server to another?
I currently have a live redis server running on a cloud instance and I want to migrate this redis server to a new cloud instance and use that instance as my new redis server. If it were MySQL, I would export the DB from the old server and import it into the new server. How should I do this with redi...
How to capitalize the first letter in a String in Ruby
The upcase method capitalizes the entire string, but I need to capitalize only the first letter.
8 Answers
...
How do I skip an iteration of a `foreach` loop?
In Perl I can skip a foreach (or any loop) iteration with a next; command.
8 Answers
...
How to keep keys/values in same order as declared?
I have a dictionary that I declared in a particular order and want to keep it in that order all the time. The keys/values can't really be kept in order based on their value, I just want it in the order that I declared it.
...
How to filter multiple values (OR operation) in angularJS
I want to use the filter in angular and want to filter for multiple values, if it has either one of the values then it should be displayed.
...
Hidden features of C
I know there is a standard behind all C compiler implementations, so there should be no hidden features. Despite that, I am sure all C developers have hidden/secret tricks they use all the time.
...
Add regression line equation and R^2 on graph
I wonder how to add regression line equation and R^2 on the ggplot . My code is:
9 Answers
...