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Difference between VARCHAR and TEXT in MySQL [duplicate]
...if you use mysqli without store_result), you maybe get a memory allocation error, because PHP tries to allocate 4 GB of memory to be sure the whole string can be buffered. This maybe also happens in other languages than PHP.
However, you should always check the input (Is it too long? Does it contai...
Why doesn't java.lang.Number implement Comparable? [duplicate]
...lues are equal is tricky and has to be done within an acceptable margin of error. Try code like:
double d1 = 1.0d;
double d2 = 0.0d;
for (int i=0; i<10; i++) {
d2 += 0.1d;
}
System.out.println(d2 - d1);
and you'll be left with some small difference.
So back to the issue of making Number Co...
INSERT IF NOT EXISTS ELSE UPDATE?
...t command will insert the record. If the record exists, it will ignore the error caused by the conflict with an existing primary key.
The second command will update the record (which now definitely exists)
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Where is SQL Server Management Studio 2012?
...s - many thanks! It does now load, but unfortunately now comes up with an error message saying that I need to run the command ssms.exe /resetsettings from the command prompt. I'll try variations out and be sure to add a comment back here.
– Andy Brown
May 5 '...
How to get unique values in an array
...be ? ToObject(this value).
if (this == null) {
throw new TypeError('"this" is null or not defined');
}
var o = Object(this);
// 2. Let len be ? ToLength(? Get(O, "length")).
var len = o.length >>> 0;
// 3. If len is 0, return false.
if (l...
Disable Required validation attribute under certain circumstances
...ach (var modelValue in modelState.Values)
{
modelValue.Errors.Clear();
}
}
}
A better approach has been described here Enable/Disable mvc server side validation dynamically
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Internet Explorer's CSS rules limits
...
Thank you for the script. It helped me debug a different error
– Jdahern
May 6 '14 at 22:56
4
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Sql Server string to date conversion
...TRY_PARSE(FORMAT(@d, N'MMM-dd/yyyy HH:mm:ss') AS DATETIME);
-- returns an error if the conversion fails:
SELECT PARSE(FORMAT(@d, N'MMM-dd/yyyy HH:mm:ss') AS DATETIME);
I strongly encourage you to take more control and sanitize your date inputs. The days of letting people type dates using whatever...
Naming “class” and “id” HTML attributes - dashes vs. underlines [closed]
.../
.demoimage {}
/* Not recommended: uses underscore instead of hyphen */
.error_status {}
/* Recommended */
#video-id {}
.ads-sample {}
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follo...
Random record in ActiveRecord
... The code Model.find(:offset => offset).first will throw error. I think Model.first(:offset => offset) might perform better.
– Harish Shetty
May 3 '10 at 0:30
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