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Change from SQLite to PostgreSQL in a fresh Rails project
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The steps below worked for me. It uses the taps gem, created by Heroku and mentioned in Ryan Bates's Railscast #342. There are a few steps but it worked perfectly (even dates were correctly migrated), and it was far easier than the Oracle -> DB2...
jQuery Call to WebService returns “No Transport” error
...e. If your browser doesn't allow it, setting this property will do nothing for you. I would recommend putting in a bit of effort now to get JSONP in place. At the very least, you might want to try and see if forcing jQuery cross-domain support works with all the browsers you plan on supporting. I al...
How to set the UITableView Section title programmatically (iPhone/iPad)?
...hing like this:
ObjC
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
NSString *sectionName;
switch (section) {
case 0:
sectionName = NSLocalizedString(@"mySectionName", @"mySectionName");
break;
case 1:
...
Can I have onScrollListener for a ScrollView?
...) to it using the method addOnScrollChangedListener().
You can see more information about this class here.
It lets you be aware of every scrolling event - but without the coordinates. You can get them by using getScrollY() or getScrollX() from within the listener though.
scrollView.getViewTreeObs...
Capturing mobile phone traffic on Wireshark
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Here are some suggestions:
For Android phones, any network: Root your phone, then install tcpdump on it. This app is a tcpdump wrapper that will install tcpdump and enable you to start captures using a GUI. Tip: You will need to make sure you supply th...
Why does git diff on Windows warn that the “terminal is not fully functional”?
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For Git Bash, this can be fixed by adding the following line to ~/.bashrc:
export TERM=cygwin
-or-
export TERM=msys
The first seems to be the original by git for windows, the second a popular known form to "heal" as wel...
Update a submodule to the latest commit
...rectory & check update:
cd ..
git status
If the submodule updated before, it will show something like below:
# Not currently on any branch.
# Changed but not updated:
# (use "git add ..." to update what will be committed)
# (use "git checkout -- ..." to discard changes in working direc...
A CSS selector to get last visible div
...ct and style this with JavaScript or jQuery, but CSS alone can't do this.
For example, if you have jQuery implemented on the site, you could just do:
var last_visible_element = $('div:visible:last');
Although hopefully you'll have a class/ID wrapped around the divs you're selecting, in which cas...
How do I hotkey directly to File Search tab in Eclipse
...define another one (e.g. CTRL+SHIFT+H). To delete the other binding search for "Open Search Dialog" and click on Unbind Command.
Other solution: You could press CTRL+3 in your editor, type in "file s", press Enter. The next time you press CTRL+3 "File Search" is at the top.
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How to check whether a string is a valid HTTP URL?
There are the Uri.IsWellFormedUriString and Uri.TryCreate methods, but they seem to return true for file paths etc.
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