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How to match “anything up until this sequence of characters” in a regular expression?
...steps
trying to match the following part. This is the greedy behavior,
meaning as much as possible to satisfy.
When using .+?, instead of matching all at once and going back for
other conditions (if any), the engine will match the next characters by
step until the subsequent part of the r...
Android SharedPreference security
...es are stored as XML files in the /data/data/ directory, which essentially means that any application with superuser privileges on a rooted device can access your SharedPreferences, even if they were created with MODE_PRIV
s...
What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
...:
SELECT * FROM Cars;
And then for each Car:
SELECT * FROM Wheel WHERE CarId = ?
In other words, you have one select for the Cars, and then N additional selects, where N is the total number of cars.
Alternatively, one could get all wheels and perform the lookups in memory:
SELECT * FROM Wheel
Thi...
In a Bash script, how can I exit the entire script if a certain condition occurs?
...
Replace 1 with appropriate error codes. See also Exit Codes With Special Meanings.
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How to save a git commit message from windows cmd?
...im. To save changes and quit, type:
<esc> :wq <enter>
That means:
Press Escape. This should make sure you are in command mode
type in :wq
Press Return
An alternative that stdcall in the comments mentions is:
Press Escape
Press shift+Z shift+Z (capital Z twice).
...
SELECT * FROM X WHERE id IN (…) with Dapper ORM
...this directly. For example...
string sql = "SELECT * FROM SomeTable WHERE id IN @ids"
var results = conn.Query(sql, new { ids = new[] { 1, 2, 3, 4, 5 }});
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Does the join order matter in SQL?
... (commutativity and associativity) properties:
a LEFT JOIN b
ON b.ab_id = a.ab_id
LEFT JOIN c
ON c.ac_id = a.ac_id
is equivalent to:
a LEFT JOIN c
ON c.ac_id = a.ac_id
LEFT JOIN b
ON b.ab_id = a.ab_id
but:
a LEFT JOIN b
ON b.ab_id = a.ab_id
LEFT JOIN c
ON c....
raw vs. html_safe vs. h to unescape html
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h is html_safe, which means the HTML is rendered as-is.
– Dave Newton
Jan 9 '18 at 22:24
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git diff renamed file
...t of addition/deletions
compared to the file's size). For example, -M90% means Git should
consider a delete/add pair to be a rename if more than 90% of the file
hasn't changed. Without a % sign, the number is to be read as a
fraction, with a decimal point before it. I.e., -M5 becomes 0.5, an...
Vagrant reverse port forwarding?
...that when you setup config.vm.network :private_network, ip: "192.168.50.4" means that the guest will access the host by going to "192.168.50.1" is the key bit of information here. I cannot find that little tidbit documented anywhere.
– Nucleon
Aug 26 '13 at 21:...