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Run a callback only if an attribute has changed in Rails
I have the following association in my app:
3 Answers
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Is there any free OCR library for Android? [closed]
...ependent OCR. is there any opensource/free Java OCR I can use for android application development?
6 Answers
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On Duplicate Key Update same as insert
... g=g;
To get the id from LAST_INSERT_ID; you need to specify the backend app you're using for the same.
For LuaSQL, a conn:getlastautoid() fetches the value.
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Solving a “communications link failure” with JDBC and MySQL [duplicate]
...e server.
I spent several days to solve this problem. I have tested many approaches that have been mentioned in different web sites, but non of them worked. Finally I changed my code and found out what was the problem. I'll try to tell you about different approaches and sum them up here.
While I ...
JavaScript property access: dot notation vs. brackets?
...keywords (like new and class) in internet explorer 8.
I had this code:
//app.users is a hash
app.users.new = {
// some code
}
And this triggers the dreaded "expected indentifier" (at least on IE8 on windows xp, I havn't tried other environments). The simple fix for that is to switch to bracket...
iOS - Build fails with CocoaPods cannot find header files
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I had faced issue:Pod files were not getting detected in app and 'svn obstructed folder issue' which occurs when you have deleted or moved the .svn subdirectories: Solution: by following steps: 1.Uninstall CocoaPods from app so only . xcodeproj file exists (referred : stackoverflow...
How to manually deprecate members
...precated)
func myFunc() {
// ...
}
Where * is the platform (iOS, iOSApplicationExtension, macOS, watchOS, tvOS, * for all, etc.).
You can also specify the version of the platform from which it was introduced, deprecated, obsoleted, renamed, and a message :
@available(iOS, deprecated:6.0)
fu...
No Activity found to handle Intent : android.intent.action.VIEW
...e also getting this error when trying to open a web page from your android app it is because your url looks like this:
www.google.com
instead of:
https://www.google.com or http://www.google.com
add this code to your Activity/Fragment:
public void openWebPage(String url) {
Uri webpage = Uri...
Is there a DesignMode property in WPF?
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I applied your solution in my application but it doesn't work. I asked it here stackoverflow.com/questions/3987439/…. If you would, please join us and discuss.
– Nam G VU
Oct 21 '10 at 1...
Using Rails serialize to save hash to database
I'm try to save a hash mapping ids to a number of attempts in my rails app. My migration to the database to accommodate this new column:
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