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Master-master vs master-slave database architecture?
...ilability, consistency and complexity. To address the last question first: Does this matter? Yes very much! The choices concerning how your data is to be managed is absolutely fundamental, and there's no "Best Practice" dodging the decisions. You need to understand your particular requirements.
The...
How to get the last value of an ArrayList
...empty, get throws an IndexOutOfBoundsException. You can find the whole API documentation here.
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Cannot insert explicit value for identity column in table 'table' when IDENTITY_INSERT is set to OFF
...t. In that case the table will keep track of the next free number, and you do not need to generate the OperationID by yourself. The new id can be fetched by SELECT SCOPE_IDENTITY().
– Hakan Winther
Aug 26 '09 at 13:29
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How to solve Permission denied (publickey) error when using Git?
...n: cat id_rsa.pub | pbcopy
On Linux run: cat id_rsa.pub | xclip
On Windows (via Cygwin/Git Bash) run: cat id_rsa.pub | clip
Add your key to your account via the website.
Finally setup your .gitconfig.
git config --global user.name "bob"
git config --global user.email bob@...
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Objective-C: Property / instance variable in category
As I cannot create a synthesized property in a Category in Objective-C, I do not know how to optimize the following code:
6...
What is Node.js' Connect, Express and “middleware”?
...ell, I'm confused what exactly these three projects in Node.js ecosystem do. Is it something like Rails' Rack? Can someone please explain?
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Git merge left HEAD marks in my files
... you're just committing the results of the merge, which Git would normally do automatically if there weren't conflicts.)
– Amber
May 18 '12 at 18:09
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How to remove all CSS classes using jQuery/JavaScript?
... you didn't have jQuery, then this would be pretty much your only option:
document.getElementById('item').className = '';
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SQL WHERE condition is not equal to?
...
You can do like this
DELETE FROM table WHERE id NOT IN ( 2 )
OR
DELETE FROM table WHERE id <> 2
As @Frank Schmitt noted, you might want to be careful about the NULL values too. If you want to delete everything which is...
WKWebView not loading local files under iOS 8
...fety checks
if !fileURL.isFileURL {
throw NSError(
domain: "BuggyWKWebViewDomain",
code: 1001,
userInfo: [NSLocalizedDescriptionKey: NSLocalizedString("URL must be a file URL.", comment:"")])
}
try! fileURL.checkResourceIsReachable()
// Cr...