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How do I check that a number is float or integer?
... n && n % 1 !== 0;
}
Update 2019
5 years after this answer was written, a solution was standardized in ECMA Script 2015. That solution is covered in this answer.
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Credit card expiration dates - Inclusive or exclusive?
Say you've got a credit card number with an expiration date of 05/08 - i.e. May 2008.
10 Answers
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SQL error “ORA-01722: invalid number”
... string into a number, and the string cannot be converted into a number.
Without seeing your table definition, it looks like you're trying to convert the numeric sequence at the end of your values list to a number, and the spaces that delimit it are throwing this error. But based on the informatio...
What is the purpose of Order By 1 in SQL select statement?
...ough some old code at work, and have noticed that there are several views with an order by 1 clause. What does this accomplish?
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Java Desktop application: SWT vs. Swing [closed]
...esktop application. The idea is to build a tool that automates a very repetitive task in a web application where no API is available.
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Making Python loggers output all messages to stdout in addition to log file
...ng using the logging module automatically output things to stdout in addition to the log file where they are supposed to go? For example, I'd like all calls to logger.warning , logger.critical , logger.error to go to their intended places but in addition always be copied to stdout . This is...
How do I get the number of days between two dates in JavaScript?
..., as a proof of concept to solve the problem as presented in the question. It relies on the fact that you can get the elapsed milliseconds between two dates by subtracting them, which coerces them into their primitive number value (milliseconds since the start of 1970).
// new Date("dateString...
How to use if-else option in JSTL
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Yes, but it's clunky as hell, e.g.
<c:choose>
<c:when test="${condition1}">
...
</c:when>
<c:when test="${condition2}">
...
</c:when>
<c:otherwise>
...
</c:otherwise>
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Export specific rows from a PostgreSQL table as INSERT SQL script
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Create a table with the set you want to export and then use the command line utility pg_dump to export to a file:
create table export_table as
select id, name, city
from nyummy.cimory
where city = 'tokyo'
$ pg_dump --table=export_table -...
Refresh image with a new one at the same url
I am accessing a link on my site that will provide a new image each time it is accessed.
19 Answers
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