大约有 32,000 项符合查询结果（耗时：0.0632秒） [XML]
How to read environment variables in Scala
...ies
this has a collection of methods that can be used to get environment info, including
scala.util.Properties.envOrElse("HOME", "/myhome" )
share
|
improve this answer
|
...
Difference between FetchType LAZY and EAGER in Java Persistence API?
...
I'd like to add some more info to this answer from my book - To save memory, Lazy loading is generally used for one to many and many to many relationships. For one to one, generally Eager is used.
– Erran Morad
M...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
...
The /sys filesystem should contain plenty information for your quest. My system (2.6.32-40-generic #87-Ubuntu) suggests:
/sys/class/tty
Which gives you descriptions of all TTY devices known to the system. A trimmed down example:
# ll /sys/class/tty/ttyUSB*
lrwxrw...
jQuery text() and newlines
...d the code above is very helpful in clearing the review process. For more info see Security considerations @ developer.mozilla.org/en-US/docs/Web/API/Element.innerHTML
– Delicia Brummitt
Mar 28 '14 at 21:02
...
Why does Java allow us to compile a class with a name different than the file name?
...
+1 for the historical info especially - I suspect that with the advent of nested / anonymous classes, if the same decision were to be made now (not caring about backwards compatibility) it would make much more sense to just allow one top level cla...
PHP, get file name without file extension
...
No need for all that. Check out pathinfo(), it gives you all the components of your path.
Example from the manual:
$path_parts = pathinfo('/www/htdocs/index.html');
echo $path_parts['dirname'], "\n";
echo $path_parts['basename'], "\n";
echo $path_parts['exte...
How to tell if a file is git tracked (by shell exit code)?
...
using git log will give info about this. If the file is tracked in git the command shows some results(logs). Else it is empty.
For example if the file is git tracked,
root@user-ubuntu:~/project-repo-directory# git log src/../somefile.js
commit ad9...
How to perform file system scanning
...path/filepath"
"os"
"flag"
"fmt"
)
func visit(path string, f os.FileInfo, err error) error {
fmt.Printf("Visited: %s\n", path)
return nil
}
func main() {
flag.Parse()
root := flag.Arg(0)
err := filepath.Walk(root, visit)
fmt.Printf("filepath.Walk() returned %v\n", err)
}
Plea...
How do you determine what SQL Tables have an identity column programmatically
...tem tables (which are subject to change, version to version) is to use the
INFORMATION_SCHEMA views:
select COLUMN_NAME, TABLE_NAME
from INFORMATION_SCHEMA.COLUMNS
where COLUMNPROPERTY(object_id(TABLE_SCHEMA+'.'+TABLE_NAME), COLUMN_NAME, 'IsIdentity') = 1
order by TABLE_NAME
...
How to Batch Rename Files in a macOS Terminal?
...hword replaceword *
Remove the 'n' parameter to apply the changes.
More info: man rename
share
|
improve this answer
|
follow
|
...