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SQL error “ORA-01722: invalid number”
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Well it also can be :
SELECT t.col1, t.col2, ('test' + t.col3) as test_col3
FROM table t;
where for concatenation in oracle is used the operator || not +.
In this case you get : ORA-01722: invalid number ...
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Using Node.js only vs. using Node.js with Apache/Nginx
... the idea of using what you know best or using what is perceived as better-tested / more stable. These are very valid reasons practically speaking, but have little purely technical relevance.
Unless you find a feature that is possible with a classic web server that is not possible with Node (and I ...
Run a Docker image as a container
...you didn't specify tag_name it will automatically run an image with the 'latest' tag.
Instead of image_name, you can also specify an image ID (no tag_name).
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Access to the path is denied
...en adds extra checks to generate better messages, but this is an expensive test on a network. Perf is a feature too.
You need to use a name like 'C:\inetpub\wwwroot\mysite\images\savehere\mumble.jpg'. Consider Path.Combine() to reliably generate the path name.
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Prevent user from seeing previously visited secured page after logout
...resence of the logged-in user.
Don't forget to clear browser cache before testing! ;)
See also:
Authentication filter and servlet for login
How to control web page caching, across all browsers?
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__lt__ instead of __cmp__
...ptions can let you optimize as needed, while still quickly prototyping and testing. Neither one tells me why it's removed. (Essentially it boils down to developer efficiency for me.) Is it possible the rich comparisons are less efficient with the cmp fallback in place? That wouldn't make sense to me...
access denied for load data infile in MySQL
...cribed by Yamir in his post I couldn't make it work.
The file was in /tmp/test.csv with 777 permissions. The MySQL user had file permissions, LOCAL option was not allowed by my MySQL version, so I was stuck.
Finally I was able to solve the problem by running:
sudo chown mysql:mysql /tmp/test.csv
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How to change position of Toast in Android?
...orizontal, bottom vertical. this effect does not happen on any of my older test devices. I display each message twice in row since any screen taps kill the first toast right away.,
– Androidcoder
Mar 19 '16 at 20:43
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Changing the browser zoom level
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You can use the CSS3 zoom function, but I have not tested it yet with jQuery. Will try now and let you know.
UPDATE: tested it, works but it's fun
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How do I round to the nearest 0.5?
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There are several options. If performance is a concern, test them to see which works fastest in a large loop.
double Adjust(double input)
{
double whole = Math.Truncate(input);
double remainder = input - whole;
if (remainder < 0.3)
{
remainder = 0;
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