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How do I select the parent form based on which submit button is clicked?
...one hidden variable that's different). A user will only fill in one form, and I'd like to validate/etc all the forms with only one JS script.
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How to append to a file in Node?
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For occasional appends, you can use appendFile, which creates a new file handle each time it's called:
Asynchronously:
const fs = require('fs');
fs.appendFile('message.txt', 'data to append', function (err) {
if (err) throw err;
console.log('Saved!');
});
Synchronously:
const fs = require...
How to get database structure in MySQL via query
...e table name after db name in mysqldump. You get the same results with SQL and SHOW CREATE TABLE:
SHOW CREATE TABLE table;
Or DESCRIBE if you prefer a column listing:
DESCRIBE table;
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How to install lxml on Ubuntu
...on of lxml altogether though, you could try
apt-get install python-lxml
and be done with it. :)
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How can I make gdb save the command history?
How can I set up gdb so that it saves the command history? When starting a new gdb session I'd like to use the arrow up keys to access the commands of the previous sessions.
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How to get min/max of two integers in Postgres/SQL?
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Have a look at GREATEST and LEAST.
UPDATE my_table
SET my_column = GREATEST(my_column - 10, 0);
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How do I create a multiline Python string with inline variables?
...h that the format() function is more common because it's readily available and it does not require an import line.
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Count the occurrences of DISTINCT values
...alues in a particular field, count the number of occurrences of that value and then order the results by the count.
3 Answe...
How can I read a text file without locking it?
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You need to make sure that both the service and the reader open the log file non-exclusively. Try this:
For the service - the writer in your example - use a FileStream instance created as follows:
var outStream = new FileStream(logfileName, FileMode.Open,
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deleting rows in numpy array
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The simplest way to delete rows and columns from arrays is the numpy.delete method.
Suppose I have the following array x:
x = array([[1,2,3],
[4,5,6],
[7,8,9]])
To delete the first row, do this:
x = numpy.delete(x, (0), axis=0)
To del...