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Two submit buttons in one form
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If you give each one a name, the clicked one will be sent through as any other input.
<input type="submit" name="button_1" value="Click me">
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Removing multiple keys from a dictionary safely
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def entries_to_remove(entries, the_dict):
for key in entries:
if key in the_dict:
del the_dict[key]
A more compact version was provided by mattbornski using dict.pop()
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BestPractice - Transform first character of a string into lower case
...ution is not optimized because string.Format is slow and you don't need it if you have a format that will never change. It also generates an extra string to covert the letter to lowercase, which is not needed.
The approach with "+ 32" is ugly / not maintainable as it requires knowledge of ASCII cha...
How to prevent form from submitting multiple times from client side?
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What if the form is submitted by pressing enter in a textbox?
– ichiban
May 29 '09 at 16:18
2
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Is there an easy way to add a border to the top and bottom of an Android View?
...m>
</layer-list>
The down side to this is that you have to specify an opaque background colour, as transparencies won't work. (At least i thought they did but i was mistaken). In the above example you can see that the solid colour of the first shape #FFdddddd is copied in the 2nd shapes ...
How to import a Python class that is in a directory above?
...ge hierarchy, use two dots, as the import statement doc says:
When specifying what module to import you do not have to specify the absolute name of the module. When a module or package is contained within another package it is possible to make a relative import within the same top package withou...
Best way to specify whitespace in a String.Split operation
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If you just call:
string[] ssize = myStr.Split(null); //Or myStr.Split()
or:
string[] ssize = myStr.Split(new char[0]);
then white-space is assumed to be the splitting character. From the string.Split(char[]) method's docum...
Is it possible to write data to file using only JavaScript?
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Some suggestions for this -
If you are trying to write a file on client machine, You can't do this in any cross-browser way. IE does have methods to enable "trusted" applications to use ActiveX objects to read/write file.
If you are trying to save it on...
SQL: How to properly check if a record exists
...rs in recent RDBMS's optimize SELECT COUNT(*) anyway, so while there is a difference in theory (and older databases), you shouldn't notice any difference in practice.
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MySQL ON DUPLICATE KEY - last insert id?
...ression to that MySQL function.
From the MySQL documentation example:
If a table contains an AUTO_INCREMENT column and INSERT ... UPDATE inserts a row, the LAST_INSERT_ID() function returns the AUTO_INCREMENT value. If the statement updates a row instead, LAST_INSERT_ID() is not meaningful. How...