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Solutions for INSERT OR UPDATE on SQL Server
... Primary key violations should not occur if you have the proper unique index constraints applied. The whole point of the constraint is to prevent duplicate rows from every happening. It doesn't matter how many threads are trying to insert, the database will serialize as necessary to enforce the ...
Why are floating point numbers inaccurate?
... # double precision. all python floats are this
int_pack = 'Q'
float_pack = 'd'
exponent_bits = 11
mantissa_bits = 52
exponent_bias = 1023
else:
raise ValueError, 'bits argument must be 32 or 64'
bin_iter = iter(bin(struct.unpack(int_...
Eclipse: Can you format code on save?
... This looks very useful -- is there a way to achieve the same for PHP code?
– Vacilando
Mar 6 '12 at 13:13
3
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PostgreSQL create table if not exists
... CONSTRAINT pk_sch_foo PRIMARY KEY (id));
CREATE INDEX /* IF NOT EXISTS add for PostgreSQL 9.5+ */ idx_sch_foo_demo_column ON sch.foo(demo_column);
CREATE INDEX /* IF NOT EXISTS add for PostgreSQL 9.5+ */ idx_sch_foo_demo_column2 ON sch.foo(demo_column2);...
Twitter Bootstrap Form File Element Upload Button
...hoose File...
<input type="file" style='position:absolute;z-index:2;top:0;left:0;filter: alpha(opacity=0);-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";opacity:0;background-color:transparent;color:transparent;' name="file_source" size="40" onchange='$("#upload-file-...
Two submit buttons in one form
...
The OP didn't ask for PHP.
– Rudey
Jul 31 '14 at 15:18
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show 7 more comments
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Getting an empty JQuery object
...my case. Maybe I should open a question about it, but I solved it by using PHP instead of jQuery so I can't really dig more into it right now.
– cregox
Mar 2 '11 at 19:02
2
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Post data to JsonP
...trol-Max-Age", "1000" ); // time from request to response before timeout
PHP:
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: POST');
header('Access-Control-Max-Age: 1000');
Doing like this, you are opening your server to any post request, you should re-secure th...
data.frame rows to a list
...lows to 'transform' the data.frame into a list of its lines, keeping the $ indexation which can be useful for further use with lapply (assuming the function you pass to lapply uses this $ indexation)
share
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How to use redis PUBLISH/SUBSCRIBE with nodejs to notify clients when data values change?
...unction() {
subscribe.quit();
});
});
}
./public/index.html
<html>
<head>
<title>PubSub</title>
<script src="/socket.io/socket.io.js"></script>
<script src="/javascripts/jquery-1.4.3.min.js"></script>
</head>...