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Improve INSERT-per-second performance of SQLite
... includes an option to ignore existing records, overwrite them or raise an error. My rudimentary benchmarks show a 10x speed improvement compared to sequential writes -- YMMV.
I'm using it in production code where I frequently need to import large datasets, and I'm pretty happy with it.
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C# pattern to prevent an event handler hooked twice [duplicate]
...e, e.g. Foo?.Invoke() would now become foo?.Invoke(). Otherwise you get an error.
– toddmo
Oct 19 '17 at 16:19
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Python setup.py develop vs install
Two options in setup.py develop and install are confusing me. According to this site , using develop creates a special link to site-packages directory.
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Easy way to test a URL for 404 in PHP?
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If you are using PHP's curl bindings, you can check the error code using curl_getinfo as such:
$handle = curl_init($url);
curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
/* Get the HTML or whatever is linked in $url. */
$response = curl_exec($handle);
/* Check for 404 (fil...
What is the difference between __dirname and ./ in node.js?
...But when I run the same script from /home/user/ I get
{ hello: 'world' }
Error: ENOENT, no such file or directory './files/somefile.txt'
at Object.openSync (fs.js:228:18)
at Object.readFileSync (fs.js:119:15)
at Object.<anonymous> (/home/user/dir/dir.js:4:16)
at Module._compi...
LINQ Join with Multiple Conditions in On Clause
...VariantID, ProductId = jpr.Prices.ProduktID } into lj
But its showing error at this point:
join pv in _dbContext.ProductVariants on p.ProduktId equals pv.ProduktId
Error: The type of one of the expressions in the join clause is incorrect. Type inference failed in the call to 'GroupJoin'.
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Getting the index of the returned max or min item using max()/min() on a list
...e range()
– davide
Aug 31 '19 at 12:05
np.argmin does not work for floats. only the first suggestion works on ints an...
Xcode stuck on Indexing
...at I accidentally defined a class as its own subclass. I got no warning or error for this but the compiling got stuck.
class mainClass : mainClass
{
...
}
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PHP case-insensitive in_array function
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The last comment contains a syntax error: /$ should be $/ instead.
– Gogowitsch
Dec 12 '12 at 15:01
1
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Finding the type of an object in C++
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edited Mar 28 '19 at 20:05
Jean-François Fabre♦
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