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Accessing UI (Main) Thread safely in WPF
I have an application which updates my datagrid each time a log file that I'm watching gets updated (Appended with new text) in the following manner:
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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
In my Rails (3.2) app, I have a bunch of tables in my database but I forgot to add a few not null constraints. I've googled around but I can't find how to write a migration which adds not null to an existing column.
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How can I check if the current date/time is past a set date/time?
...o use new DateTime("now", new DateTimeZone('UTC')). This will prevent your app from misunderstandable bugs in dates. i advise you to store it in a function static variable, a class static or somewhere else in your running process...
– Loenix
Oct 12 '16 at 8:01
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jQuery .val change doesn't change input value
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This is just a possible scenario which happened to me. Well if it helps someone then great: I wrote a complicated app which somewhere along the code I used a function to clear all textboxes values before showing them. Sometime later I tried to set a textbox value u...
Is onload equal to readyState==4 in XMLHttpRequest?
...that represents XHR 2 is CORS support so from that standpoint XHR 2 didn't appear in IE until IE 10 but XHR.onload was supported in IE 9 which is typically believed to be XHR 1.
– Chase
Nov 5 '14 at 6:39
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Validate that end date is greater than start date with jQuery
... I had to modify it slightly to allow for blank end dates in my app, but this did the bulk. code if (value == 0) { return true; } else if (!/Invalid|NaN/... code
– Frank Luke
Jun 23 '11 at 14:48
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Where does PostgreSQL store the database?
... BTW - if anyone is looking for the database location for Postgres.app on a mac like I was, it's in ~/Library/Application Support/Postgres[ver]/var by default.
– sstringer
Jan 11 '14 at 19:00
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How to change the background color of a UIButton while it's highlighted?
At some point in my app I have a highlighted UIButton (for example when a user has his finger on the button) and I need to change the background color while the button is highlighted (so while the finger of the user is still on the button).
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Setting up maven dependency for SQL Server
...ead to a tight coupling with the development machine you are building your app on? I mean if the same project is tried to be build on a different machine, it would not find the jar in the local repo. Wouldn't it be good to add it to the project so that its available on VCS?
– O...
Tick symbol in HTML/XHTML
We need to display a tick symbol (✓ or ✔) within an internal web app and would ideally like to avoid using an image.
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