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What is float in Java?
...nt. As a float is less precise than a double, the conversion cannot be performed implicitly.
If you want to create a float, you should end your number with f (i.e.: 3.6f).
For more explanation, see the primitive data types definition of the Java tutorial.
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How to create a tuple with only one element
...hon Docs:
A special problem is the construction of tuples containing 0 or 1 items: the syntax has some extra quirks to accommodate these. Empty tuples are constructed by an empty pair of parentheses; a tuple with one item is constructed by following a value with a comma (it is not sufficient to ...
Transferring ownership of an iPhone app on the app store
My team and I have an app which we're going to be submitting to the store pretty soon, but we know that we'll be selling the app to another company in the near future. Does anyone have any experience with moving an app's ownership to another account?
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DateTime to javascript date
... Regarding your second thoughts: it does matter during the transition to or from daylight saving time (I always have to think really hard to remember which :). During the transition the hour of 2:00 to 3:00 is repeated twice. This means that during one hour the javascript date will be off by one h...
Add subdomain to localhost URL
...n web application that behaves differently depending on a url prefix. The format is something like:
5 Answers
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Add querystring parameters to link_to
...dding querystring parameters to link_to UrlHelper. I have an Index view, for example, that has UI elements for sorting, filtering, and pagination (via will_paginate). The will_paginate plugin manages the intra-page persistence of querystring parameters correctly.
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Recreating a Dictionary from an IEnumerable
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If you're using .NET 3.5 or .NET 4, it's easy to create the dictionary using LINQ:
Dictionary<string, ArrayList> result = target.GetComponents()
.ToDictionary(x => x.Key, x => x.Value);
There's no ...
What is the maximum recursion depth in Python, and how to increase it?
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It is a guard against a stack overflow, yes. Python (or rather, the CPython implementation) doesn't optimize tail recursion, and unbridled recursion causes stack overflows. You can check the recursion limit with sys.getrecursionlimit:
import sys
print(sys.getrecursionlimit())
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How to iterate over a JavaScript object?
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For most objects, use for .. in :
for (let key in yourobject) {
console.log(key, yourobject[key]);
}
With ES6, if you need both keys and values simultaneously, do
for (let [key, value] of Object.entries(yourobject)) {
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How to start an application without waiting in a batch file?
... it\program.exe” as its title.
If you use start with something that is (or needs to be) surrounded by quotes, you need to put empty quotes as the first argument:
start "" "\Foo\Bar\Path with spaces in it\program.exe"
This is because start interprets the first quoted argument it finds as the wi...