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How do I replace whitespaces with underscore?
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Probably the variable that you called replace on, was not a string type.
– Snigdha Batra
Aug 10 '15 at 9:10
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How to log SQL statements in Grails
... SQL along with bind variables (so you can see the values passed into your calls, and easily replicate the SQL in your editor or otherwise).
In your Config.groovy, add the following to your log4j block:
log4j = {
// Enable Hibernate SQL logging with param values
trace 'org.hibernate.type'...
How to verify an XPath expression in Chrome Developers tool or Firefox's Firebug?
... the first element that matches. Equivalent to document.querySelector() or calls the $ function in the page, if it exists.
$$(): Returns an array of DOM nodes that match. This is like for document.querySelectorAll(), but returns an array instead of a NodeList.
$x(): Evaluates an XPath expression and...
How to mkdir only if a directory does not already exist?
...t a feature of mkdir itself, but the shell that executes the command. It's called brace expansion - AFAIK, only Bash, ksh, zsh, and the C shell support it.
– Daniel Kamil Kozar
May 24 '16 at 18:49
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Read first N lines of a file in python
...earlier, you'd need to rewrite the code with a try...except block. Stylistically, I prefer the first option, although as mentioned the second is more robust for short files.
– Alasdair
Nov 20 '09 at 1:21
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How do I do a Date comparison in Javascript? [duplicate]
...it will become "Invalid Date". Its getTime() function will return NaN, and calling isNaN() on the date itself will return true; that's the easy way to check if a string is a valid date.
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How to create PDF files in Python [closed]
...me on every platform. Sometimes a PDF document needs to be generated dynamically, however, and that can be quite a challenge. Fortunately, there are libraries that can help. This article examines one of those for Python.
Read more at http://www.devshed.com/c/a/Python/Python-for-PDF-Generation/#whoC...
gulp command not found - error after installing gulp
I've installed gulp both globally and locally using
39 Answers
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How can I create a directly-executable cross-platform GUI app using Python?
...nux. It's newer than py2exe and handles eggs quite well. I've found it magically works better without configuration for a wide variety of applications.
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Check if image exists on server using JavaScript?
...nstance I have images 1.jpg - 5.jpg loaded into the html page. I'd like to call a JavaScript function every minute or so that would roughly do the following scratch code...
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