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How to get diff working like git-diff?
...
Needed to enable Extra Packages for Enterprise Linux (EPEL) on Amazon Linux to install colordiff: docs.aws.amazon.com/AWSEC2/latest/UserGuide/…
– Pat Myron
Aug 23 '19 at 18:03
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MySQL OPTIMIZE all tables?
... optimising 1 table at a time. You should implode the table names into one string and hence only one optimize table query is required.
– Dean Marshall
Apr 14 '12 at 11:23
8
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Insert, on duplicate update in PostgreSQL?
...th "id=3" does not already exist.
You can combine these two into a single string and run them both with a single SQL statement execute from your application. Running them together in a single transaction is highly recommended.
This works very well when run in isolation or on a locked table, but i...
How do I update a Linq to SQL dbml file?
... This seems to be the easiest, least destructive method that requires no extra tools and works just fine in VS2017
– Toby
May 8 '17 at 9:16
1
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How do I programmatically determine operating system in Java?
...find this code useful:
class ShowProperties {
public static void main(String[] args) {
System.getProperties().list(System.out);
}
}
All it does is print out all the properties provided by your Java implementations. It'll give you an idea of what you can find out about your Java en...
adding and removing classes in angularJs using ng-click
... also. Might not be 100% linked with the question scope but still provides extra useful information: stackoverflow.com/questions/31047094/…
– BiLaL
Oct 17 '16 at 9:33
add a ...
How to hide first section header in UITableView (grouped style)
...{
if (section == 0)
return 1.0f;
return 32.0f;
}
- (NSString*) tableView:(UITableView *) tableView titleForHeaderInSection:(NSInteger)section
{
if (section == 0) {
return nil;
} else {
// return some string here ...
}
}
- (void) viewDidLoad
{
[su...
Re-doing a reverted merge in Git
...n you're ready for it. The only downside here is that you'll a have a few extra merge/revert commits in your history.
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Add a default value to a column through a migration
..., since change_column is irreversible.
Instead, though it may be a couple extra lines, you should use def up and def down
So if you have a column with no default value, then you should do this to add a default value.
def up
change_column :users, :admin, :boolean, default: false
end
def down
...
iPhone App 开发第一步：从零到真机调试HelloWorld - 更多技术 - 清泛网 - ...
...ist
将以下两段中的YES改为NO
<key>CODE_SIGNING_REQUIRED</key>
<string>YES</string>
...
<key>ENTITLEMENTS_REQUIRED</key>
<string>YES</string>
修改Info.plist
同样先备份原文件：
cd /Developer/Platforms/iPhoneOS.platform/
sudo cp Info.plist Info.plist.orig
进行编...