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Merge multiple lines (two blocks) in Vim
...s of lines in Vim, i.e. take lines n..m and append them to lines a..b . If you prefer a pseudocode explanation: [a[i] + b[i] for i in min(len(a), len(b))]
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How to delete all Annotations on a MKMapView
...userLocation];
[mapView removeAnnotations:[mapView annotations]];
if ( userLocation != nil ) {
[mapView addAnnotation:userLocation]; // will cause user location pin to blink
}
}
Example 2, I personally prefer to avoid removing the location user pin
in the first place,
-...
Entity Framework Timeouts
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There is a known bug with specifying default command timeout within the EF connection string.
http://bugs.mysql.com/bug.php?id=56806
Remove the value from the connection string and set it on the data context object itself. This will work if you remove t...
Difference between java.lang.RuntimeException and java.lang.Exception
Someone please explain the difference between java.lang.RuntimeException and java.lang.Exception ? How do I decide which one to extend if I create my own exception?
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Pros and Cons of SQLite and Shared Preferences [closed]
...e data very easy. But as easy as it is to store a small amount of data as difficult it is to store and read large structured data as you need to define key for every single data, furthermore you cannot really search within the data except you have a certain concept for naming the keys.
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Canary release strategy vs. Blue/Green
...u can control and minimize the number of users/customers that get impacted if you end up releasing a bad bug.
5 Answers
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How do I copy an object in Java?
... use it. It's way too easy to create a class and do improper clone method. If you are going to do that, read at least what Joshua Bloch has to say about it in Effective Java.
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Convert Float to Int in Swift
I want to convert a Float to an Int in Swift. Basic casting like this does not work because these types are not primitives, unlike float s and int s in Objective-C
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What happens if i return before the end of using statement? Will the dispose be called?
...Service Reference / Client Proxy! -- and when that happens it can be very difficult to track down the original exception if Dispose was called during an exception stack unwind, since the original exception gets swallowed in favor of the new exception generated by the Dispose call. It can be maddenin...
Iterate over object keys in node.js
...low for better optimisation.
Benchmark
As you can see Object.keys is significantly faster. Whether the actual memory storage is more optimum is a different matter.
var async = {};
async.forEach = function(o, cb) {
var counter = 0,
keys = Object.keys(o),
len = keys.length;
var next = f...