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How to add a primary key to a MySQL table?
...ion of mysql are you on? (NOTE: I know it worked at the time I posted this and I believe it was 5.6... but I can't remember for sure)
– MER
Jul 18 '18 at 17:23
1
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How to suppress scientific notation when printing float values?
... I guess by using a variable, give it the desired number of digits, and use it instead of the literal number e.g. f"{a:.{precision}f}"
– Aziz Alto
Nov 15 '19 at 19:39
a...
How to stop an app on Heroku?
... users. However, I notice there are some data issues which i'd like to fix and stop the app in the mean time so users don't enter anything new.
...
background-size in shorthand background property (CSS3)
I'm trying to mix background-image and background-size properties in a shorthanded background property. Based on W3C documentation background-size should come after background-position property separated with an slash( / ).
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Check if array is empty or null
...hat you want. There are a lot of ways to clean up your code to be simpler and more readable. Here's a cleaned up version with notes about what I cleaned up.
var album_text = [];
$("input[name='album_text[]']").each(function() {
var value = $(this).val();
if (value) {
album_text.p...
from jquery $.ajax to angular $http
...ethod)
AngularJS will take care of converting JS objects into JSON string and setting headers (those are customizable)
Callback functions are named success and error respectively (also please note parameters of each callback) - Deprecated in angular v1.5
use then function instead.
More info of the...
WPF: How to programmatically remove focus from a TextBox
...learFocus() on a TextBox inside a modal Window, it causes both the TextBox and the Window to lose focus. Meaning KeyDown events no longer go to the Window. By instead changing it so the Focus changes to a parent (which may be the Window), the future KeyDown events are not lost. In my practical ex...
Check if EditText is empty. [closed]
I have 5 EditTexts in android for users to input. I would like to know if I could have a method for checking all the 5 EditTexts if they are null. Is there any way to do this??
...
How does Rails keep track of which migrations have run for a database?
...runs a migration, it takes the leading digits in the migration's file name and inserts a row for that "version", indicating it has been run. If you roll back that migration, Rails will delete the corresponding row from schema_migrations.
For example, running a migration file named 20120620193144_cr...
What is a good pattern for using a Global Mutex in C#?
The Mutex class is very misunderstood, and Global mutexes even more so.
8 Answers
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