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Bash Templating: How to build configuration files from templates with Bash?
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NOTE: Apparently a there was a change from bash 3.1 to 3.2 (and up) in which the single quotes around the regex - treat the contents of the regex as a string literal. So the regex above should be... (\$\{[a-zA-Z_][a-zA-Z_0-9]*\}) stackoverflow.com/questions/304864/…
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What is a “callable”?
...t call it and catch TypeError later. callable is removed in Python 3.0 and 3.1, use callable = lambda o: hasattr(o, '__call__') or isinstance(o, collections.Callable).
Example, a simplistic cache implementation:
class Cached:
def __init__(self, function):
self.function = function
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Understanding ibeacon distancing
...lculateAccuracy(int txPower, double rssi) {
if (rssi == 0) {
return -1.0; // if we cannot determine accuracy, return -1.
}
double ratio = rssi*1.0/txPower;
if (ratio < 1.0) {
return Math.pow(ratio,10);
}
else {
double accuracy = (0.89976)*Math.pow(ratio,7.7095) + 0.111; ...
How to round the corners of a button
...layer.borderColor=[uicolor blackColor].CGColor;
YourBtn1.layer.borderWidth=1.0f;
Swift 4 Solution
YourBtn1.layer.cornerRadius = YourBtn1.Frame.size.width/2
YourBtn1.layer.borderColor = UIColor.black.cgColor
YourBtn1.layer.borderWidth = 1.0
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Float vs Decimal in ActiveRecord
... why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.10000000000000000555111512312578270211815834045" # not "0.1"!
whereas if you just do
irb:002:0> (1.0/10).to_s
=> "0.1" # the interprer rounds the number for you
So if you are dealing with small fra...
Spring MVC @PathVariable getting truncated
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For Spring 3.1 users - if you're using the new RequestMappingHandlerMapping instead, the property to set is useSuffixPatternMatch (also to false). @Ted: the linked issue mentions that in 3.2 they hope to add a bit more control so it doe...
Getting a map() to return a list in Python 3.x
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@hughdbrown The argument for using 3.1's map would be lazy evaluation when iterating on a complex function, large data sets, or streams.
– Andrew Keeton
Aug 20 '09 at 0:45
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Fluid or fixed grid system, in responsive design, based on Twitter Bootstrap
...des of one's Web page content.
container-fluid is added back in Bootstrap 3.1
A fluid grid layout uses all screen width and works better in large screen. It turns out that it is easy to create a fluid grid layout using Bootstrap 3 mixins. The following line makes a fluid responsive grid layout:
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Android: how to draw a border to a LinearLayout
...ch" project (for android-8), define res/layout/main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
an...
How to center align the ActionBar title in Android?
...Bar().setCustomView(R.layout.abs_layout);
abs_layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
...