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npm install vs. update - what's the difference?
...d in package.json:
{
"name": "my-project",
"version": "1.0", // install update
"dependencies": { // ------------------
"already-installed-versionless-module": "*", // ignores "1.0" -> "1.1"
"alrea...
How to make Twitter Bootstrap tooltips have multiple lines?
...lly be actual newlines. Alternatively, you can use encoded newlines &#013;, but that's probably even less desirable than using <br>'s.
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How to cast int to enum in C++?
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int i = 1;
Test val = static_cast<Test>(i);
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Bring element to front using CSS
...o bring images to front using CSS . I've already tried setting z-index to 1000 and position to relative, but it still fails.
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Python argparse: default value or specified value
...rgparse.ArgumentParser()
parser.add_argument('--example', nargs='?', const=1, type=int)
args = parser.parse_args()
print(args)
% test.py
Namespace(example=None)
% test.py --example
Namespace(example=1)
% test.py --example 2
Namespace(example=2)
nargs='?' means 0-or-1 arguments
const=1 sets...
Accessing class variables from a list comprehension in the class definition
...lowing will fail:
class A:
a = 42
b = list(a + i for i in range(10))
So, to summarize: you cannot access the class scope from functions, list comprehensions or generator expressions enclosed in that scope; they act as if that scope does not exist. In Python 2, list comprehensions were ...
SQL query for today's date minus two months
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answered Mar 24 '11 at 21:20
Abe MiesslerAbe Miessler
73.5k8282 gold badges266266 silver badges436436 bronze badges
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Multiple levels of 'collection.defaultdict' in Python
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edited Sep 12 '19 at 19:45
StevenWernerCS
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conditional unique constraint
... constraint like this. The difference is, you'll return false if Status = 1 and Count > 0.
http://msdn.microsoft.com/en-us/library/ms188258.aspx
CREATE TABLE CheckConstraint
(
Id TINYINT,
Name VARCHAR(50),
RecordStatus TINYINT
)
GO
CREATE FUNCTION CheckActiveCount(
@Id INT
) RETURNS I...
For loop example in MySQL
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145
drop table if exists foo;
create table foo
(
id int unsigned not null auto_increment primary k...