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Javascript roundoff number to nearest 0.5
Can someone give me an idea how can i round off a number to the nearest 0.5.
I have to scale elements in a web page according to screen resolution and for that i can only assign font size in pts to 1, 1.5 or 2 and onwards etc.
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How expensive is RTTI?
... none of them actually give any benchmarks or quantitative data reguarding memory, processor time, or speed.
11 Answers
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Add a prefix string to beginning of each line
...any other character not in prefix, or
escape the /, so the sed command becomes
's#^#/opt/workdir#'
# or
's/^/\/opt\/workdir/'
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How to show full object in Chrome console?
...entation of the specified object. If the object being logged is an HTML element, then the properties of its DOM representation are printed [1]
[1] https://developers.google.com/web/tools/chrome-devtools/debug/console/console-reference#dir
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Checking if form has been submitted - PHP
...e was a POST action use:
if (!empty($_POST))
EDIT: As stated in the comments, this method won't work for in some cases (e.g. with check boxes and button without a name). You really should use:
if ($_SERVER['REQUEST_METHOD'] == 'POST')
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in Ipython notebook / Jupyter, Pandas is not displaying the graph I try to plot
I am trying to plot some data using pandas in Ipython Notebook, and while it gives me the object, it doesn't actually plot the graph itself. So it looks like this:
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jQuery select by attribute using AND and OR operators
I'm thinking about, if it is possible in jQuery to select elements by named attributes using AND and OR.
8 Answers
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Get raw POST body in Python Flask regardless of Content-Type header
...will.
If you access request.data first, it will call get_data with an argument to parse form data first. If the request has a form content type (multipart/form-data, application/x-www-form-urlencoded, or application/x-url-encoded) then the raw data will be consumed. request.data and request.json wi...
What does InitializeComponent() do, and how does it work in WPF?
... the default constructor of at least Window and UserControl) is actually a method call to the partial class of the control (rather than a call up the object hierarchy as I first expected).
This method locates a URI to the XAML for the Window/UserControl that is loading, and passes it to the System....
grep exclude multiple strings
...Two examples of filtering out multiple lines with grep:
Put this in filename.txt:
abc
def
ghi
jkl
grep command using -E option with a pipe between tokens in a string:
grep -Ev 'def|jkl' filename.txt
prints:
abc
ghi
Command using -v option with pipe between tokens surrounded by parens:
egr...