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How can I truncate a double to only two decimal places in Java?
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@ChristianGarcía Truncation is properly done with RoundingMode.DOWN as RoudingMode.FLOOR always rounds towards negative infinity.
– Dev
May 28 '15 at 19:12
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How can I detect if a browser is blocking a popup?
..., assuming that now it’s “outside of the user action”. So the first one is blocked, and the second one is not.
Original answer which was current 2012:
This solution for popup blocker checking has been tested in FF (v11),
Safari (v6), Chrome (v23.0.127.95) & IE (v7 & v9). Updat...
How do I iterate through each element in an n-dimensional matrix in MATLAB?
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The idea of a linear index for arrays in matlab is an important one. An array in MATLAB is really just a vector of elements, strung out in memory. MATLAB allows you to use either a row and column index, or a single linear index. For example,
A = magic(3)
A =
8 1 6
3 ...
How to place two divs next to each other?
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Float one or both inner divs.
Floating one div:
#wrapper {
width: 500px;
border: 1px solid black;
overflow: hidden; /* will contain if #first is longer than #second */
}
#first {
width: 300px;
float:left; /* a...
When writing a directive in AngularJS, how do I decide if I need no new scope, a new child scope, or
I'm looking for some guidelines that one can use to help determine which type of scope to use when writing a new directive. Ideally, I'd like something similar to a flowchart that walks me through a bunch of questions and out pops the correct answer – no new new scope, new child scope, or new isol...
What is a domain specific language? Anybody using it? And in what way?
... features that make it easy to build new DSLs.
Martin Fowler is a big proponent of the idea, as here.
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Javascript: Setting location.href versus location
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Like mentioned by @SwissMister in the answer below, it seems that window.location.href is somewhat treated like an XHR request. If fired from within an XHR's success callback, window.location.href will be treated as an XHR while window...
Ruby on Rails: how do I sort with two columns using ActiveRecord?
I want to sort by two columns, one is a DateTime ( updated_at ), and the other is a Decimal (Price)
7 Answers
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How to create GUID / UUID?
...IDs must be of the form "xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx", where x is one of [0-9, a-f] M is one of [1-5], and N is [8, 9, a, or b]
Use of a low-quality source of randomness (such as Math.random)
Thus, developers writing code for production environments are encouraged to use a rigorous, well-...
Replace non-numeric with empty string
Quick add on requirement in our project. A field in our DB to hold a phone number is set to only allow 10 characters. So, if I get passed "(913)-444-5555" or anything else, is there a quick way to run a string through some kind of special replace function that I can pass it a set of characters to ...