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Combining two expressions (Expression)
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Well, you can use Expression.AndAlso / OrElse etc to combine logical expressions, but the problem is the parameters; are you working with the same ParameterExpression in expr1 and expr2? If so, it is easier:
var body = Expression.AndAlso(expr1.Body, expr2.Body);
var lam...
Copying text with color from Notepad++
...ault Edit > Copy command provided RTF as a default for MS Word, Outlook etc.
– Jonathan Watmough
Sep 26 '16 at 14:16
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How to convert currentTimeMillis to a date in Java?
..."real" month as we know it. Example: 0 = January, 1 = February, 2 = March, etc.
– shagberg
Dec 7 '18 at 21:21
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How to get all subsets of a set? (powerset)
...sets).
def power_set(A):
"""A is an iterable (list, tuple, set, str, etc)
returns a set which is the power set of A."""
length = len(A)
l = [a for a in A]
ps = set()
for i in range(2 ** length):
selector = f'{i:0{length}b}'
subset = {l[j] for j, bit in enum...
How to round a number to significant figures in Python
... . Doesn't protected against undefined like math.inf, or garbage like None etc
– AJP
Nov 28 '19 at 8:52
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How to see the changes between two commits without commits in-between?
...er than 'abcdef's immediate ancestor. Of course, you may get conflicts and etc, so it's not a very useful process in most cases.
If you're just interested in abcdef itself, you can do:
$ git log -u -1 abcdef
This compares abcdef to its immediate ancestor, alone, and is usually what you want.
An...
Proper way to handle multiple forms on one page in Django
...s? Like, with checking is_valid() from the first form, then the first two, etc… Maybe just have a handled = False that gets updated to True when a compatible form is found?
– binki
Jan 13 '16 at 22:31
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What is the correct way to start a mongod service on linux / OS X?
... don't want/need launchctl, you can just run:
mongod --config /usr/local/etc/mongod.conf
==> Summary
???? /usr/local/Cellar/mongodb/3.0.6: 17 files, 159M
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How to make rounded percentages add up to 100%
...mal place instead of integer values. So the numbers would be 48.3 and 23.9 etc. This would drop the variance from 100 by a lot.
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What is the function __construct used for?
...after it has been created, and is a good place to put initialisation code, etc.
class Person {
public function __construct() {
// Code called for each new Person we create
}
}
$person = new Person();
A constructor can accept parameters in the normal manner, which are passed whe...