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Why does isNaN(“ ”) (string with spaces) equal false?
In JavaScript, why does isNaN(" ") evaluate to false , but isNaN(" x") evaluate to true ?
23 Answers
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How to extract a substring using regex
...s two single quotes in it, the ' character. In between the single quotes is the data I want.
13 Answers
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Limiting floats to two decimal points
... numbers that not all numbers can be represented exactly. The command line is just showing you the full floating point form from memory.
With floating point representation, your rounded version is the same number. Since computers are binary, they store floating point numbers as an integer and then ...
How should the ViewModel close the form?
I'm trying to learn WPF and the MVVM problem, but have hit a snag.
This question is similar but not quite the same as this one (handling-dialogs-in-wpf-with-mvvm) ...
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How can I restart a Java application?
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Of course it is possible to restart a Java application.
The following method shows a way to restart a Java application:
public void restartApplication()
{
final String javaBin = System.getProperty("java.home") + File.separator + "bin"...
Regular expression search replace in Sublime Text 2
...eplace with regular expressions in Sublime Text 2. The documentation on this is rather anemic. Specifically, I want to do a replace on groups, so something like converting this text:
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Get records with max value for each group of grouped SQL results
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There's a super-simple way to do this in mysql:
select *
from (select * from mytable order by `Group`, age desc, Person) x
group by `Group`
This works because in mysql you're allowed to not aggregate non-group-by columns, in which case mysql just returns the...
Can I bind an array to an IN() condition?
... to bind an array of values to a placeholder using PDO. The use case here is attempting to pass an array of values for use with an IN() condition.
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Compiling C++ on remote Linux machine - “clock skew detected” warning
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That message is usually an indication that some of your files have modification times later than the current system time. Since make decides which files to compile when performing an incremental build by checking if a source files has bee...
file_put_contents - failed to open stream: Permission denied
I am trying to write a query to a file for debugging. The file is in database/execute.php . The file I want to write to is database/queries.php .
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