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Fastest way to count exact number of rows in a very large table?
...nly speculate. Does the db maintenance process find out that there are 42,123,876 rows in table A and then create 42,123,876 empty rows in table B, and then loop through table A and update the rows in table B...? Or is it crazier than that? ;-)
– Tony Andrews
...
Ruby replace string with captured regex pattern
...note that you can index a string with a regex:
"foo"[/oo/]
#=> "oo"
"Z_123: foobar"[/^Z_.*(?=:)/]
#=> "Z_123"
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Creating PHP class instance with a string
...ther cool stuff you can do in php are:
Variable variables:
$personCount = 123;
$varname = 'personCount';
echo $$varname; // echo's 123
And variable functions & methods.
$func = 'my_function';
$func('param1'); // calls my_function('param1');
$method = 'doStuff';
$object = new MyClass();
$obj...
MySQL - force not to use cache for testing speed of query
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123
Another alternative that only affects the current connection:
SET SESSION query_cache_type=0;...
Show hidden div on ng-click within ng-repeat
...hide the first div when I click on second div.
– User123
Oct 12 '16 at 7:41
To answer the Q above... Just change the n...
Interop type cannot be embedded
...
123
Like Jan It took me a while to get it .. =S So for anyone else who's blinded with frustration....
Regex using javascript to return just numbers
... the non-digit characters (\D or [^0-9]):
let word_With_Numbers = 'abc123c def4567hij89'
let word_Without_Numbers = word_With_Numbers.replace(/\D/g, '');
console.log(word_Without_Numbers)
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How to spread django unit tests over multiple files?
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123
Note that this approach is no longer valid from Django 1.6, see this post.
You can create tes...
How to round a number to n decimal places in Java
...f.setRoundingMode(RoundingMode.CEILING);
for (Number n : Arrays.asList(12, 123.12345, 0.23, 0.1, 2341234.212431324)) {
Double d = n.doubleValue();
System.out.println(df.format(d));
}
gives the output:
12
123.1235
0.23
0.1
2341234.2125
EDIT: The original answer does not address the acc...
How should I pass multiple parameters to an ASP.Net Web API GET?
...GET',
data: { system : 'My System',
searchString: '123' },
dataType: 'json',
success: function (data) {
$.each(data, function (index, v) {
alert(index + ': ' + v.name);
});
},
statusCode: ...