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Replace values in list using Python [duplicate]
...
This might help...
test_list = [5, 8]
test_list[0] = None
print test_list
#prints [None, 8]
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Removing colors from output
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This one (of the many I tested) worked with Ansible output that had been run with unbuffer.
– Martin
Nov 8 '18 at 20:39
add ...
How can I scale the content of an iframe?
...efore the frame</p>
<div id="wrap">
<iframe id="frame" src="test2.html"></iframe>
</div>
<p>Some text after the frame</p>
</body>
Note: I had to use the wrap element for Firefox. For some reason, in Firefox when you scale the object down by 75%, it s...
How can I check if a background image is loaded?
...
A comparison between this test and this one shows that you have to call .remove() on $('<img/>') object to avoid a memory leak. You should see a stable memory consumption on the first test and a memory increase on the second one. After few hour...
Is it faster to count down than it is to count up?
... range of the numbers you're using: with the incrementing loop you have to test i<N each time round the loop. For the decrementing version, the carry flag (set as a side effect of the subtraction) may automatically tell you if i>=0. That saves a test per time round the loop.
In reality, on mo...
Update a record without first querying?
...he database using the context of the datastore. Example:
dataEntity.ExecuteStoreCommand
("UPDATE items SET itemstatus = 'some status' WHERE id = 123 ");
For performance reasons, you may want to pass in variables instead of a single hard coded SQL string. This will allow SQL Server to cache t...
Which HTML elements can receive focus?
...esn't do anything useful). Other embedding elements also, maybe, I haven't tested them all.
Any element with a tabindex
There are likely to be other subtle exceptions and additions to this behaviour depending on browser.
sh...
read subprocess stdout line by line
...e()
if not line:
break
#the real code does filtering here
print "test:", line.rstrip()
Of course you still have to deal with the subprocess' buffering.
Note: according to the documentation the solution with an iterator should be equivalent to using readline(), except for the read-ahead ...
What is the difference between bottom-up and top-down?
...tuitive and very easy to implement. Just write a recursive solution first, test it on small tests, add memoization (caching of already computed values), and --- bingo! --- you are done.
Usually you can also write an equivalent iterative program that works from the bottom up, without recursion. In t...
Detect changed input text box
...dy(function () {
$('#inputDatabaseName').keyup(function () { alert('test'); });
});
</script>
Here's the official jQuery documentation for .keyup().
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