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Check if a temporary table exists and delete if it exists before creating a temporary table
I am using the following code to check if the temporary table exists and drop the table if it exists before creating again. It works fine as long as I don't change the columns. If I add a column later, it will give an error saying "invalid column". Please let me know what I am doing wrong.
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C# 4.0 optional out/ref arguments
Does C# 4.0 allow optional out or ref arguments?
9 Answers
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ASP.NET MVC Relative Paths
In my applications, I often have to use relative paths. For example, when I reference JQuery, I usually do so like this:
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Numpy: find first index of value fast
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There is a feature request for this scheduled for Numpy 2.0.0: https://github.com/numpy/numpy/issues/2269
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Writing a list to a file with Python
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You can use a loop:
with open('your_file.txt', 'w') as f:
for item in my_list:
f.write("%s\n" % item)
In Python 2, you can also use
with open('your_file.txt', 'w') as f:
for item in my_list:
print >> f, item
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Creating a custom JButton in Java
Is there a way to create a JButton with your own button graphic and not just with an image inside the button?
5 Answers
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unique object identifier in javascript
... return this.__uniqueId;
}
});
}());
For details, see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Object/defineProperty
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What's the right way to decode a string that has special HTML entities in it? [duplicate]
...{
return $('<textarea/>').text(value).html();
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script>
$(document).ready(function() {
$("#encoded")
.text(htmlEncode("<img src onerror='alert(0)'>"));
$("#decode...
Can a CSS class inherit one or more other classes?
I feel dumb for having been a web programmer for so long and not knowing the answer to this question, I actually hope it's possible and I just didn't know about rather than what I think is the answer (which is that it's not possible).
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ssh remote host identification has changed
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Here is the simplest solution
ssh-keygen -R <host>
For example,
ssh-keygen -R 192.168.3.10
From ssh-keygen man page:
-R hostname Removes all keys belonging to hostname from a known_hosts file. This option is useful to delete...