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How to prevent browser page caching in Rails
...nse.headers["Pragma"] = "no-cache"
response.headers["Expires"] = "Mon, 01 Jan 1990 00:00:00 GMT"
end
end
Rails 4 and older versions:
class ApplicationController < ActionController::Base
before_filter :set_cache_headers
private
def set_cache_headers
response.headers["Cache-Co...
Breaking a list into multiple columns in Latex
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edited Feb 10 '13 at 21:31
worldsayshi
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answered Se...
detach all packages while working in R
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What is the lifetime of a static variable in a C++ function?
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The lifetime of function static variables begins the first time[0] the program flow encounters the declaration and it ends at program termination. This means that the run-time must perform some book keeping in order to destruct it only if it was actually constructed.
Additionally, since t...
GMSGroundOverlay animating - should I be using a CATiledLayer?
...rray *longitudes = [NSMutableArray arrayWithCapacity:21];
for (int i = 0; i <= 20; i++) {
CGFloat radians = (float)i * ((2.0f * M_PI) / 20.0f);
// Calculate the x,y coordinate using the angle
CGFloat x = hDist * cosf(radians);
CGFloat y = vDist * sinf(radians)...
Bypass confirmation prompt for pip uninstall
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gbozeegbozee
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MongoDB: How to query for records where field is null or not set?
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edited Aug 31 '16 at 0:31
answered May 14 '12 at 21:55
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What is sr-only in Bootstrap 3?
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.sr-only {
position: absolute;
width: 1px;
height: 1px;
padding: 0;
margin: -1px;
overflow: hidden;
clip: rect(0,0,0,0);
border: 0;
}
Is it important or can I remove it? Works fine without.
It's important, don't remove it.
You should always consider screen readers for acces...
How can I wrap text to some length in Vim?
...tion 1 would be achieved by setting textwidth (for example :set textwidth=30 (from Swaarop's answer)). Then you can reformat your text by highlighting it (in visual mode) and typing gq. (textwidth can be abbreviated as tw, thus :set tw=30.)
Option 2 can be toggled by running :set wrap / :set nowrap...
Python integer division yields float
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answered Aug 15 '09 at 21:51
Brandon E TaylorBrandon E Taylor
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