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How often does python flush to a file?
...ional buffering argument specifies the file’s desired buffer size:"
0 means unbuffered,
1 means line buffered,
any other positive value means use a buffer of (approximately) that size.
A negative buffering means to use the system default, which is usually line buffered for tty devices and fu...
Get checkbox value in jQuery
...o with the property of the checkbox, they are checking the attribute which means they are testing the initial state of the checkbox when it was loaded. So in short:
When you have the element and you know it is a checkbox you can simply read its property and you won't need jQuery for that (i.e. elem...
Foreign Key to non-primary key
... track of the same room, and a soft-delete field, like RM_Status, where 99 means 'deleted', and <> 99 means 'active'.
So when you create the first room, you insert RM_UID and RM_ApertureID as the same value as RM_UID.
Then, when you terminate the room to a date, and re-establish it with a n...
MySQL ON DUPLICATE KEY - last insert id?
...tml
At the bottom of the page they explain how you can make LAST_INSERT_ID meaningful for updates by passing an expression 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() functio...
Javascript : natural sort of alphanumerical strings
...e'. Tested in Chrome, Firefox, and IE11.
Here's an example. It returns 1, meaning 10 goes after 2:
'10'.localeCompare('2', undefined, {numeric: true, sensitivity: 'base'})
For performance when sorting large numbers of strings, the article says:
When comparing large numbers of strings, such ...
How to save an activity state using save instance state?
...le, so a new instance must be created. This is the fundamental problem; it means one cannot rely on existence of bundle, and must do some alternative means of persistent storage. The benefit of onSave/onRestoreInstanceState is that it is a mechanism the system can do abruptly, without consuming much...
Accessing Session Using ASP.NET Web API
...sion State
Access to ASP.NET session state
is exclusive per session, which means that if two different users make
concurrent requests, access to each separate session is granted
concurrently. However, if two concurrent requests are made for the
same session (by using the same SessionID value), the f...
ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged)
...sn't this all depend on your understanding of the term changed? This could mean that a property of one of the elements in the collection has changed (which is how I think you are interpreting it) or it could mean that one of the elements of the collection has been changed by replacing it with a diff...
Why is using onClick() in HTML a bad practice?
... still working without JS, or if the user middle clicks the link.
It also means that I could handle generic popups by rewriting again to:
HTML:
<a class="popup" href="/map/">link</a>
JS:
$(document).ready(function() {
$(".popup").click(function(){
popup($(this).attr("h...
How do you effectively model inheritance in a database?
...re is a single table which represents all the inheritance hierarchy, which means several of the columns will probably be sparse. A discriminator column is added which tells the system what type of row this is.
Given the classes above, you end up with this table:
table Person
------------
int id (P...