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How can I round a number in JavaScript? .toFixed() returns a string?
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It returns a string because 0.1, and powers thereof (which are used to display decimal fractions), are not representable (at least not with full accuracy) in binary floating-point systems.
For example, 0.1 is really 0.100000000000000005551115123125782702118...
IDEA: javac: source release 1.7 requires target release 1.7
...incorrect compiler options imported from Maven here:
Also check project and module bytecode (target) version settings outlined on the screenshot.
Other places where the source language level is configured:
Project Structure | Project
Project Structure | Modules (check every module) | Sour...
What's a good way to overwrite DateTime.Now during testing?
... in providing the clock to the class that relies on it, but that could be handled by any number of dependency injection solutions (using an Inversion of Control container, plain old constructor/setter injection, or even a Static Gateway Pattern).
Other mechanisms of delivering an object or method t...
In Objective-C, how do I test the object type?
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If your object is myObject, and you want to test to see if it is an NSString, the code would be:
[myObject isKindOfClass:[NSString class]]
Likewise, if you wanted to test myObject for a UIImageView:
[myObject isKindOfClass:[UIImageView class]]
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Which letter of the English alphabet takes up most pixels?
...our environment. But the fact is, most fonts follow the same conventions, and capital W will be the widest.
Gist with these character widths in a ratio form (W = 100) captured here using this particular example font:
https://gist.github.com/imaurer/d330e68e70180c985b380f25e195b90c
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How to delete multiple values from a vector?
I have a vector like: a = c(1:10) and I need to remove multiple values, like: 2, 3, 5
8 Answers
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SQL Server 2008: How to query all databases sizes?
I have MS SQL 2008 R2, 500 databases.
What is the most efficient, easiest and 'modern' way to query all databases sizes.
14...
How to convert all text to lowercase in Vim
...rocessor). If you want to convert text to lowercase, create a visual block and press u (or U to convert to uppercase). Tilde (~) in command mode reverses case of the character under the cursor.
If you want to see all text in Vim in small caps, you might want to look at the guifont option, or type :s...
Container View Controller Examples [closed]
...roller Class Reference . I feel I need a little more information than that and an example implementation would be nice. Google has turned up nothing at all.
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ERROR 1452: Cannot add or update a child row: a foreign key constraint fails
...relationships involve a parent table that holds the
central data values, and a child table with identical values pointing
back to its parent. The FOREIGN KEY clause is specified in the child
table.
It will reject any INSERT or UPDATE operation that attempts to create
a foreign key value...