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FB OpenGraph og:image not pulling images (possibly https?)
... answered a similar question sometime ago with this problem). So make sure all these things are correct.
– Syed I.R.
May 25 '14 at 20:05
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What does iota of std::iota stand for?
...ase Greek letter iota.
In the quote above, I typed ι, U+03B9, “GREEK SMALL LETTER IOTA”, but Unicode actually has a dedicated code point for APL's iota: ⍳ is U+2373, “APL FUNCTIONAL SYMBOL IOTA”.
In response to the demands of commenters, I shall further address the etymology of “iot...
When are you truly forced to use UUID as part of the design?
I don't really see the point of UUID . I know the probability of a collision is effectively nil , but effectively nil is not even close to impossible.
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In C/C++ what's the simplest way to reverse the order of bits in a byte?
...b;
}
First the left four bits are swapped with the right four bits. Then all adjacent pairs are swapped and then all adjacent single bits. This results in a reversed order.
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difference between iframe, embed and object elements
...before that it was a non standard tag, which admittedly was implemented by all major browsers. Behaviour prior to HTML 5 can vary ...
The embed element provides an integration point for an external (typically non-HTML) application or interactive content. (HTML 5 standard - "The <embed> elemen...
How to export and import a .sql file from command line with options? [duplicate]
...some issues/tips:
Error: ......not exist when using LOCK TABLES
# --lock-all-tables，-x , this parameter is to keep data consistency because some transaction may still be working like schedule.
# also you need check and confirm: grant all privileges on *.* to root@"%" identified by "Passwd";
ER...
What is an index in SQL?
...refman/5.0/en/mysql-indexes.html
An index can be used to efficiently find all rows matching some column in your query and then walk through only that subset of the table to find exact matches. If you don't have indexes on any column in the WHERE clause, the SQL server has to walk through the whole ...
How to execute multi-line statements within Python's own debugger (PDB)
So I am running a Python script within which I am calling Python's debugger, PDB by writing:
6 Answers
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When to use MyISAM and InnoDB? [duplicate]
... -- Mostly no longer true.
Full-text indexing. -- InnoDB has it now
Especially good for read-intensive (select) tables. -- Mostly no longer true.
Disk footprint is 2x-3x less than InnoDB's. -- As of Version 5.7, this is perhaps the only real advantage of MyISAM.
InnoDB:
The InnoDB storage engi...
Why do most C developers use define instead of const? [duplicate]
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@C. Ross: Consistency. All manifest constants are usually defined with #defines. const is only used to indicate a read-only (access path to a) variable. I know, const in C is just plain broken :-)
– Bart van Ingen Schenau
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