大约有 10,150 项符合查询结果(耗时:0.0474秒) [XML]
YYYY-MM-DD format date in shell script
I tried using $(date) in my bash shell script, however, I want the date in YYYY-MM-DD format.
How do I get this?
13 A...
SELECT INTO a table variable in T-SQL
Got a complex SELECT query, from which I would like to insert all rows into a table variable, but T-SQL doesn't allow it.
8...
Convert a list to a string in C#
How do I convert a list to a string in C#?
13 Answers
13
...
How do you find the disk size of a Postgres / PostgreSQL table and its indexes
I'm coming to Postgres from Oracle and looking for a way to find the table and index size in terms of bytes/MB/GB/etc , or even better the size for all tables. In Oracle I had a nasty long query that looked at user_lobs and user_segments to give back an answer.
...
What is “rvalue reference for *this”?
Came across a proposal called "rvalue reference for *this" in clang's C++11 status page .
3 Answers
...
I can’t find the Android keytool
I am trying to follow the Android mapping tutorial and got to this part where I had to get an API key .
10 Answers
...
Check if a Bash array contains a value
In Bash, what is the simplest way to test if an array contains a certain value?
35 Answers
...
How to construct a timedelta object from a simple string
I'm writing a function that needs a timedelta input to be passed in as a string. The user must enter something like "32m" or "2h32m", or even "4:13" or "5hr34m56s"... Is there a library or something that has this sort of thing already implemented?
...
How to plot two histograms together in R?
I am using R and I have two data frames: carrots and cucumbers. Each data frame has a single numeric column which lists the length of all measured carrots (total: 100k carrots) and cucumbers (total: 50k cucumbers).
...
Get environment variable value in Dockerfile
I'm building a container for a ruby app. My app's configuration is contained within environment variables (loaded inside the app with dotenv ).
...
