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Facebook Post Link Image
...:image - The URL to an image that represents the entity. Images must be at least 50 pixels by 50 pixels. Square images work best, but you are allowed to use images up to three times as wide as they are tall.
og:url - The canonical, permanent URL of the page representing the entity. When you use Open...
Is file append atomic in UNIX?
... under the size of 'PIPE_BUF' is supposed to be atomic. That should be at least 512 bytes, though it could easily be larger (linux seems to have it set to 4096).
This assume that you're talking all fully POSIX-compliant components. For instance, this isn't true on NFS.
But assuming you write to ...
Finding the type of an object in C++
...al object, the cast will throw a bad_cast exception.
Make sure there is at least one virtual function in Base class to make dynamic_cast work.
Wikipedia topic Run-time type information
RTTI is available only for classes that are polymorphic, which means
they have at least one virtual method. In pra...
What is uint_fast32_t and why should it be used instead of the regular int and uint32_t?
...ve a uint32_t.
uint_fast32_t states your intent clearly: it's a type of at least 32 bits which is the best from a performance point-of-view. uint_fast32_t may be in fact 64 bits long. It's up to the implementation.
... there is uint_fast32_t which has the same typedef as uint32_t ...
What you...
Best way to create unique token in Rails?
...ype of loop) should be used in this case (where loop is required to run at least once) instead of begin...while ("do...while" type of loop)?
– Krule
Mar 10 '13 at 11:13
...
Chrome ignores autocomplete=“off”
...eir own problem and choice, not mine. They'll be unable to visit or use at least 90% of websites online with it turned off... Your downvote is completely irrelevant.
– Fizzix
Nov 4 '15 at 0:11
...
Generate a random number in the range 1 - 10
...
I wonder if at least in theory it is possible that random() would return a value <1 that when multiplied by 9 would be >=9 due to the inexact nature of the double precision type? In practice even if it is possible it would be vanishin...
How to become an OpenCart guru? [closed]
...in the cart
$this->cart->hasProducts() - returns true if there is at least one item in the cart
$this->cart->hasStock() - returns false if there is at least one item in the cart that is out of stock
$this->cart->hasShipping() - returns true if there is at least one item in the cart...
.NET unique object identifier
...ny two non-identical reference values must refer to different objects - at least in C#.
– Jon Skeet
Jan 4 '14 at 22:50
1
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Difference between partition key, composite key and clustering key in Cassandra?
... KEY((col1, col2), col10, col4))
You can perform query only by passing at least both col1 and col2, these are the 2 columns that define the partition key. The "general" rule to make query is you have to pass at least all partition key columns, then you can add optionally each clustering key in the ...