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Execute command on all files in a directory
...ption of shell to delimit files with this NULL byte using the -d option of read command, we can do below
( shopt -s nullglob; printf '%s\0' ./* ) | while read -rd '' file; do
cmdToRun [option] -- "$file"
done
The nullglob and the printf are wrapped around (..) which means they are basically r...
Read url to string in few lines of java code
...implementation, which is not a single line, do this:
public static String readStringFromURL(String requestURL) throws IOException
{
try (Scanner scanner = new Scanner(new URL(requestURL).openStream(),
StandardCharsets.UTF_8.toString()))
{
scanner.useDelimiter("\\A");
...
What part of Hindley-Milner do you not understand?
...s that the environment Γ includes the fact that x has type σ.
⊢ can be read as proves or determines. Γ ⊢ x : σ means that the environment Γ determines that x has type σ.
, is a way of including specific additional assumptions into an environment Γ.
Therefore, Γ, x : τ ⊢ e : τ' means ...
MySQL maximum memory usage
...mize its behavior. If you run into issues, you really need to sit down and read the (f'ing) manual.
As for the database -- a few important constraints:
table engine (InnoDB, MyISAM, ...)
size
indices
usage
Most MySQL tips on stackoverflow will tell you about 5-8 so called important settings. Fi...
Python Script execute commands in Terminal
I read this somewhere a while ago but cant seem to find it. I am trying to find a command that will execute commands in the terminal and then output the result.
...
Passing a string with spaces as a function argument in bash
...bles denoted by a literal dollar sign \$. Then in the function use eval to read the variable and output as expected.
#!/usr/bin/ksh
myFunction()
{
eval string1="$1"
eval string2="$2"
eval string3="$3"
echo "string1 = ${string1}"
echo "string2 = ${string2}"
echo "string3 = ${string3}"
...
How to deal with SettingWithCopyWarning in Pandas?
...for false positives is addressed in the docs on indexing, if you'd like to read further. You can safely disable this new warning with the following assignment.
import pandas as pd
pd.options.mode.chained_assignment = None # default='warn'
...
How do I create an immutable Class?
...king on creating an immutable class.
I have marked all the properties as read-only.
6 Answers
...
Git: Permission denied (publickey) fatal - Could not read from remote repository. while cloning Git
... need to do the following in terminal on GitBash, OSX or Linux:
# Lists already added identities (‘ssh keys’)
ssh-add -l
Then, if you don't see your key listed, add it with the following (replace identity with its real name):
# Add a new identity
ssh-add ~/.ssh/identity
This worked for me....
Iterating over each line of ls -l output
...anently:
(IFS='
'
for x in `ls -l $1`; do echo $x; done)
Or use while | read instead:
ls -l $1 | while read x; do echo $x; done
One more option, which runs the while/read at the same shell level:
while read x; do echo $x; done << EOF
$(ls -l $1)
EOF
...