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Collection versus List what should you use on your interfaces?
...d to be easily extensible by subclassing it; it is designed to be fast for internal implementations. You'll notice the methods on it are not virtual and so cannot be overridden, and there are no hooks into its Add/Insert/Remove operations.
This means that if you need to alter the behavior of the c...
PostgreSQL query to return results as a comma separated list
... Note that for me at least, string_agg didn't like taking an int for its first argument so I did something like: string_agg(CAST(id as varchar), ',') instead.
– JZC
Jun 22 '15 at 17:24
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Display milliseconds in Excel
I am trying to display milliseconds in an Excel macro. I have a column of integers which are timestamps in milliseconds (e.g. 28095200 is 7:48:15.200 am), and I want to make a new column next to it which keeps a running average and displays the time in a hh:mm:ss.000 format.
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How to make a website secured with https
I have to build a small webapp for a company to maintain their business data... Only those within the company will be using it, but we are planning to host it in public domain, so that the employees can connect to app from various locations. (Till now I have built web apps that are hosted internall...
Is it wrong to use Deprecated methods or classes in Java?
...e the deprecation. The contract of the API method will not change. If some internal data structure changes in favor of a new, better method, there could be a performance impact, but it's quite unlikely.
The funniest deprecation in the Java API, is imo, the FontMetrics.getMaxDecent. Reason for dep...
Minimum and maximum date
...6,400,000 milliseconds per day. ECMAScript Number values can represent all integers from –9,007,199,254,740,992 to 9,007,199,254,740,992; this range suffices to measure times to millisecond precision for any instant that is within approximately 285,616 years, either forward or backward, from 01 Ja...
How to tell if a tag failed to load
... failure, // called on failure
result // used internally, shouldn't be passed
) {
var me = this;
if (times == -1 || times > 0) {
setTimeout(function () {
result = (test()) ? 1 : 0;
me.timer((resul...
What's the _ underscore representative of in Swift References?
... Note: This can be used only when a is the (external) argument label and (internal) variable name at the same time. It's equivalent - func foo(a a: String) won't accept the _.
Why is Apple using it?
You can see Apple is using it across the API. Apple's libraries are still written in Objective-C ...
How to do a batch insert in MySQL
I have 1-many number of records that need to be entered into a table. What is the best way to do this in a query? Should I just make a loop and insert one record per iteration? Or is there a better way?
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How to programmatically show next view in ViewPager?
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As blessenm answered viewpager.setCurrentItem(int index) is the way to go.
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