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How to create ENUM type in SQLite?
... PRIMARY KEY,
pName TEXT CHECK( LENGTH(pName) <= 100 ) NOT NULL DEFAULT '',
pType TEXT CHECK( pType IN ('M','R','H') ) NOT NULL DEFAULT 'M',
pField TEXT CHECK( LENGTH(pField) <= 50 ) NULL DEFAULT NULL,
pFieldExt TEXT CHECK( LENGTH(pFieldExt) &...
What should be in my .gitignore for an Android Studio project?
...here was right on the money for us...
So, here's our gitignore file:
#built application files
*.apk
*.ap_
# files for the dex VM
*.dex
# Java class files
*.class
# generated files
bin/
gen/
# Local configuration file (sdk path, etc)
local.properties
# Windows thumbnail db
Thumbs.db
# OSX fil...
What is the difference between NaN and None?
...(but perhaps are not supported i.e. they may sometimes give surprising results):
In [15]: s_bad.sum()
Out[15]: 1
In [16]: s_good.sum()
Out[16]: 1.0
To answer the second question:
You should be using pd.isnull and pd.notnull to test for missing data (NaN).
...
Flask-SQLalchemy update a row's information
...ity itself. Then, db.session.commit().
For example:
admin = User.query.filter_by(username='admin').first()
admin.email = 'my_new_email@example.com'
db.session.commit()
user = User.query.get(5)
user.name = 'New Name'
db.session.commit()
Flask-SQLAlchemy is based on SQLAlchemy, so be sure to chec...
Adjust UIButton font size to width
...itWidth = YES;
button.titleLabel.lineBreakMode = NSLineBreakByClipping; //<-- MAGIC LINE
I'm not sure why this does the trick but it does :)
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How to use Oracle ORDER BY and ROWNUM correctly?
...
FROM scott.emp
ORDER BY deptno
)
WHERE rownum <= 3
/
ROWNUM DEPTNO ENAME
---------------------------
7 10 CLARK
14 10 MILLER
9 10 KING
SELECT * FROM
(
SELECT deptno, ename
, ROW_NUMBER() OVER (ORDER BY deptno) rno
...
Get records with max value for each group of grouped SQL results
...eries that try to find the max() etc, and also the problems of returning multiple rows when there are more than one with the same maximum value (as the other answers would do)
Note: This is a mysql-only solution. All other databases I know will throw an SQL syntax error with the message "non aggrega...
Print array elements on separate lines in Bash?
...' "${my_array[@]}"
The difference between $@ and $*:
Unquoted, the results are unspecified. In Bash, both expand to separate args
and then wordsplit and globbed.
Quoted, "$@" expands each element as a separate argument, while "$*"
expands to the args merged into one argument: "$1c$2c..." (where ...
What is Node.js' Connect, Express and “middleware”?
... that Node is more than an HTTP server. But it does have an HTTP server built in, and Connect is a middleware framework that you can use in your Node.js app.
– Trevor Burnham
Aug 8 '11 at 13:47
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Can you use hash navigation without affecting history?
...g a new one.
Remember to keep the # or the last part of the url will be altered.
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