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Practical uses of git reset --soft?
...erge -s subtree projectB/master
Here the author used a reset --hard, and then read-tree to restore what the first two merges had done to the working tree and index, but that is where reset --soft can help:
How to I redo those two merges, which have worked, i.e. my working tree and index are fine, ...
Making HTTP Requests using Chrome Developer tools
...r instance:
fetch('https://jsonplaceholder.typicode.com/posts/1')
.then(res => res.json())
.then(console.log)
Or to POST a new resource:
fetch('https://jsonplaceholder.typicode.com/posts', {
method: 'POST',
body: JSON.stringify({
title: 'foo',
body: 'bar',
...
How to find current transaction level?
...
Run this:
SELECT CASE transaction_isolation_level
WHEN 0 THEN 'Unspecified'
WHEN 1 THEN 'ReadUncommitted'
WHEN 2 THEN 'ReadCommitted'
WHEN 3 THEN 'Repeatable'
WHEN 4 THEN 'Serializable'
WHEN 5 THEN 'Snapshot' END AS TRANSACTION_ISOLATION_LEVEL
FROM sys.dm_exec_sessions
where...
How do I activate a virtualenv inside PyCharm's terminal?
...harmvenv/bin/activate
Using your virtualenv path as the last parameter.
Then set the shell Preferences->Project Settings->Shell path to
/bin/bash --rcfile ~/.pycharmrc
share
|
improve thi...
How does a Java HashMap handle different objects with the same hash code?
... pair is stored in bucket number 235. (Note that one bucket can store more then one key-value pair).
When you lookup a value in the hashmap, by giving it a key, it will first look at the hash code of the key that you gave. The hashmap will then look into the corresponding bucket, and then it will c...
How do I prompt a user for confirmation in bash script? [duplicate]
... -n 1 -r
echo # (optional) move to a new line
if [[ $REPLY =~ ^[Yy]$ ]]
then
# do dangerous stuff
fi
I incorporated levislevis85's suggestion (thanks!) and added the -n option to read to accept one character without the need to press Enter. You can use one or both of these.
Also, the negated...
Why does this method print 4?
...t of space left on the stack. If it so happens that X - M - C * R >= P, then 0 will be printed. If P requires more space, then we remove frames from the stack, gaining R memory at the cost of cnt++.
When println is finally able to run, X - M - (C - cnt) * R >= P. So if P is large for a parti...
What are the differences between Deferred, Promise and Future in JavaScript?
...romise might not be able to do so.
If you're interested in the minutiae, then examine Promises/A+.
So far as I'm aware, the overarching purpose is to improve clarity and loosen coupling through a standardized interface. See suggested reading from @jfriend00:
Rather than directly passing cal...
How do you install an APK file in the Android emulator?
...Execute the emulator (SDK Manager.exe->Tools->Manage AVDs...->New then Start)
Start the console (Windows XP), Run -> type cmd, and move to the platform-tools folder of SDK directory.
Paste the APK file in the 'android-sdk\tools' or 'platform-tools' folder.
Then type the following comman...
How to compare strings in Bash
...
Using variables in if statements
if [ "$x" = "valid" ]; then
echo "x has the value 'valid'"
fi
If you want to do something when they don't match, replace = with !=. You can read more about string operations and arithmetic operations in their respective documentation.
Why do w...