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Why shouldn't I use mysql_* functions in PHP?
...d quoting external data than manually escaping it with a separate function call.
See the comparison of SQL extensions.
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How to remove all of the data in a table using Django
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As per the latest documentation, the correct method to call would be:
Reporter.objects.all().delete()
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What does “hashable” mean in Python?
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@user55711: Here, the hash value is the result of calling __hash__(). More generally, see en.wikipedia.org/wiki/Hash_function
– NPE
Jan 26 '13 at 9:57
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Change one value based on another value in pandas
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One option is to use Python's slicing and indexing features to logically evaluate the places where your condition holds and overwrite the data there.
Assuming you can load your data directly into pandas with pandas.read_csv then the following code might be helpful for you.
import pandas
df...
how to break the _.each function in underscore.js
...he Array.every method. :)
From that link:
every executes the provided callback function once for each element present in the array until it finds one where callback returns a false value. If such an element is found, the every method immediately returns false.
In other words, you could do som...
How to get the insert ID in JDBC?
...d key, then you can use Statement#getGeneratedKeys() for this. You need to call it on the same Statement as the one being used for the INSERT. You first need to create the statement using Statement.RETURN_GENERATED_KEYS to notify the JDBC driver to return the keys.
Here's a basic example:
public ...
Cannot truncate table because it is being referenced by a FOREIGN KEY constraint?
...orrect; you cannot truncate a table which has an FK constraint on it.
Typically my process for this is:
Drop the constraints
Trunc the table
Recreate the constraints.
(All in a transaction, of course.)
Of course, this only applies if the child has already been truncated. Otherwise I go a diffe...
Drawable image on a canvas
...tDrawable(id) is being deprecated, you should either use the ContextCompat call above, or the getDrawable(id, theme) call. developer.android.com/reference/android/content/res/…
– wblaschko
Dec 2 '16 at 21:37
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How can I get the corresponding table header (th) from a table cell (td)?
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$(function($) {
"use strict";
// Only part of the demo, the thFromTd call does the work
$(document).on('mouseover mouseout', 'td', function(event) {
var td = $(event.target).closest('td'),
th = thFromTd(td);
th.parent().find('.highlight').removeClass('highlight');
if (eve...
What does the function then() mean in JavaScript?
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The traditional way to deal with asynchronous calls in JavaScript has been with callbacks.
Say we had to make three calls to the server, one after the other, to set up our
application. With callbacks, the code might look something like the following (assuming
a xhrGET fu...