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Reading a plain text file in Java
... most cases):
BufferedReader br = new BufferedReader(new FileReader("file.txt"));
try {
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
sb.append(System.lineSeparator());
line = br.readLine();
}
...
How to return result of a SELECT inside a function in PostgreSQL?
...REATE OR REPLACE FUNCTION word_frequency(_max_tokens int)
RETURNS TABLE (txt text -- also visible as OUT parameter inside function
, cnt bigint
, ratio bigint) AS
$func$
BEGIN
RETURN QUERY
SELECT t.txt
, count(*) AS cnt -- column al...
When to use pip requirements file versus install_requires in setup.py?
...is means you should mirror setup.py install_requires= deps in requirements.txt?
– proppy
Sep 25 '13 at 23:24
...
Identifying the dependency relationship for python packages installed with pip
... a hn thread, I'll recommend the following:
Have a commented requirements.txt file with your main dependencies:
## this is needed for whatever reason
package1
Install your dependencies: pip install -r requirements.txt.
Now you get the full list of your dependencies with pip freeze -r requireme...
How to find out what group a given user has?
.../\:/\,/g|tr -d ' '|sed -e "s/^/$HOSTNAME,/"> /tmp/"$HOSTNAME"_inventory.txt
sudo cat /etc/sudoers| grep -v "^#"|awk '{print $1}'|grep -v Defaults|sed '/^$/d;s/[[:blank:]]//g'>/tmp/"$HOSTNAME"_sudo.txt
paste -d , /tmp/"$HOSTNAME"_inventory.txt /tmp/"$HOSTNAME"_sudo.txt|sed 's/,[[:blank:]]*$//...
Read a file one line at a time in node.js?
...tion processLineByLine() {
const fileStream = fs.createReadStream('input.txt');
const rl = readline.createInterface({
input: fileStream,
crlfDelay: Infinity
});
// Note: we use the crlfDelay option to recognize all instances of CR LF
// ('\r\n') in input.txt as a single line break...
How to copy a directory structure but only include certain files (using windows batch files)
...n use ROBOCOPY, try this:
ROBOCOPY C:\Source C:\Destination data.zip info.txt /E
EDIT: Changed the /S parameter to /E to include empty folders.
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Reading a file line by line in Go
... "log"
"os"
)
func main() {
file, err := os.Open("/path/to/file.txt")
if err != nil {
log.Fatal(err)
}
defer file.Close()
scanner := bufio.NewScanner(file)
for scanner.Scan() {
fmt.Println(scanner.Text())
}
if err := scanner.Err(); err != nil ...
Creating an empty file in Ruby: “touch” equivalent?
...and mirrors* the touch command:
require 'fileutils'
FileUtils.touch('file.txt')
* Unlike touch(1) you can't update mtime or atime alone. It's also missing a few other nice options.
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improv...
How can I recall the argument of the previous bash command?
...
If the previous command had two arguments, like this
ls a.txt b.txt
and you wanted the first one, you could type
!:1
giving
a.txt
Or if you wanted both, you could type
!:1-2
giving
a.txt b.txt
You can extend this to any number of arguments, eg:
!:10-12
...