大约有 40,000 项符合查询结果（耗时：0.0596秒） [XML]
Python dict how to create key or append an element to key?
...
|
edited Sep 30 '14 at 22:31
answered Oct 16 '12 at 0:43
...
How to specify a min but no max decimal using the range data annotation attribute?
I would like to specify that a decimal field for a price must be >= 0 but I don't really want to impose a max value.
10 Ans...
Capistrano error tar: This does not look like a tar archive
...
answered May 29 '14 at 15:09
kubbingkubbing
6,80044 gold badges2020 silver badges1717 bronze badges
...
How to fix the aspect ratio in ggplot?
...
110
In ggplot the mechanism to preserve the aspect ratio of your plot is to add a coord_fixed() laye...
Random date in C#
...
edited Jan 13 '16 at 23:10
Jeremy Thompson
49.5k1919 gold badges141141 silver badges245245 bronze badges
...
How can I pad a value with leading zeros?
...n for you, don't use this solution!
Potentially outdated: ECMAScript 2017 includes String.prototype.padStart and Number.prototype.toLocaleString is there since ECMAScript 3.1. Example:
var n=-0.1;
n.toLocaleString('en', {minimumIntegerDigits:4,minimumFractionDigits:2,useGrouping:false})
...
Float vs Decimal in ActiveRecord
...a Float. It's like a scientific notation for binary (something like +1.43*10^2). Because of that, it is impossible to store fractions and decimals in Float exactly.
That's why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.100000000000000005551115123125782702...
Why doesn't c++ have &&= or ||= for booleans?
... is then equivalent to static_cast<int>(b) & 2, which results in 0, which is then converted back into a bool. So it’s true that the existence of an operator &&= would improve type safety.
share
|...
do { … } while (0) — what is it good for? [duplicate]
I've been seeing that expression for over 10 years now. I've been trying to think what it's good for. Since I see it mostly in #defines, I assume it's good for inner scope variable declaration and for using breaks (instead of gotos.)
...
How do I create/edit a Manifest file?
...
In Visual Studio 2010, 2012, 2013, 2015 and 2017 you can add the manifest file to your project.
Right click your project file on the Solution Explorer, select Add, then New item (or CTRL+SHIFT+A). There you can find Application Manifest File....