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html tables: thead vs th
...u object to someone linking to a 30 year old RFC that's still in use? What does it matter how old the page is so long as the information is still relevant?
– jmbpiano
Oct 16 '17 at 15:08
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css transform, jagged edges in chrome
...sing transition instead of transform, -webkit-backface-visibility: hidden; does not work. A jagged edge appears during animation for a transparent png file.
To solve it I used: outline: 1px solid transparent;
share
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Replace whole line containing a string using Sed
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@MarcusDowning GNU sed does not require the space; it works just fine as originally posted. If your particular sed requires the space, then by all means note which sed is incompatible and add the necessary invocation as a comment. However, please d...
Rails create or update magic?
...ver this functionality.
Model.upsert(column_name: value)
[upsert] It does not instantiate any models nor does it trigger Active Record callbacks or validations.
Rails 5, 4, and 3
Not if you are looking for an "upsert" (where the database executes an update or an insert statement in the sam...
0.1 float is greater than 0.1 double. I expected it to be false [duplicate]
... comments have said, IEEE754, the de-facto standard on FP representations, does it this way, but in theory there could be FP implementations that simply truncated instead of rounding.
– us2012
Oct 10 '13 at 14:18
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Rerender view on browser resize with React
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How does this work? The this.updateDimensions passed to addEventListener is just a bare function reference which will have no value for this when called. Should an anonymous function, or a .bind() call be used to add this, or h...
Correct format specifier for double in printf
...2.2/6: "If the expression that denotes the called function has a type that does not include a prototype, the integer promotions are performed on each argument, and arguments that have type float are promoted to double. These are called the default argument promotions." In C++ the wording is somewhat...
Get the height and width of the browser viewport without scrollbars using jquery?
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thanks Kyle, this does not include the browser scrollbars, right?
– Yetimwork Beyene
Jan 9 '12 at 20:00
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How to test equality of Swift enums with associated values
... = SimpleToken.Number(123)
Before Swift 4.1
As others have noted, Swift doesn't synthesize the necessary equality operators automatically. Let me propose a cleaner (IMHO) implementation, though:
enum SimpleToken: Equatable {
case Name(String)
case Number(Int)
}
public func ==(lhs: Simpl...
Hash collision in git
...m is so staggeringly small you can ignore this issue
"But when a collision does occur, then what actually happens?"
Ok, suppose the improbable does happen, or suppose someone managed to tailor a deliberate SHA-1 hash collision. What happens then?
In that case there is an excellent answer where someo...