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Best practice to run Linux service as a different user
Services default to starting as root at boot time on my RHEL box. If I recall correctly, the same is true for other Linux distros which use the init scripts in /etc/init.d .
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How to prevent buttons from submitting forms
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"Let's call it <button>." "Great! What should it's default behavior be..." "Not a button?" "Ship it."
– colllin
Aug 18 at 19:54
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Is there a unique Android device ID?
...ermission.READ_PHONE_STATE)
Most users hate the fact that it says "Phone Calls" in the permission. Some users give bad ratings, because they believe you are simply stealing their personal information when all you really want to do is track device installs. It is obvious that you are collecting dat...
jQuery .val change doesn't change input value
...ct same problem. Bloody annoying! This answer should be the first point of call for any jQuery newbies looking to update form elements dynamically. Would have saved me a good few hours if I'd read this first!
– Grant
Feb 4 '16 at 23:51
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How do I get the web page contents from a WebView?
...nk I found the answer in this post on lexandera.com. The code below is basically a cut-and-paste from the site. It seems to do the trick.
final Context myApp = this;
/* An instance of this class will be registered as a JavaScript interface */
class MyJavaScriptInterface
{
@JavascriptInterface
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Declaring a custom android UI element using XML
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The Android Developer Guide has a section called Building Custom Components. Unfortunately, the discussion of XML attributes only covers declaring the control inside the layout file and not actually handling the values inside the class initialisation. The steps are a...
Convert a list of data frames into one data frame
...This is a little slower than the original:
> system.time({ df <- do.call("rbind", listOfDataFrames) })
user system elapsed
0.25 0.00 0.25
> system.time({ df2 <- ldply(listOfDataFrames, data.frame) })
user system elapsed
0.30 0.00 0.29
> identical(df, df2)...
Is JavaScript guaranteed to be single-threaded?
..., blur, log out on all except IE. These events don't just fire because you called focus() directly, they could happen because you called alert(), or opened a pop-up window, or anything else that moves the focus.
This can also result in other events. For example add an i.onchange listener and type s...
Database design for audit logging
...ea of what the old record looked like.
So for example, if you had a table called Opportunities to track sales deals, you would actually create two separate tables:
Opportunities
Opportunities_Content (or something like that)
The Opportunities table would have information you'd use to uniquely ide...
URL rewriting with PHP
...entially do this 2 ways:
The .htaccess route with mod_rewrite
Add a file called .htaccess in your root folder, and add something like this:
RewriteEngine on
RewriteRule ^/?Some-text-goes-here/([0-9]+)$ /picture.php?id=$1
This will tell Apache to enable mod_rewrite for this folder, and if it get...