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Determine on iPhone if user has enabled push notifications
...ted May 4 '19 at 13:51
Jean-François Fabre♦
122k1111 gold badges9797 silver badges156156 bronze badges
answered Mar 27 '12 at 22:28
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Android - Back button in the title bar
In many apps (Calendar, Drive, Play Store) when you tap a button and enter a new activity, the icon in the title bar turns into a back button, but for the app I am making, it doesn't do that. How do I make that icon take you back to the previous screen?
...
Calculating arithmetic mean (one type of average) in Python
...mean([1,2,4])) # 2.3333333333333335
It's available since Python 3.4. For 3.1-3.3 users, an old version of the module is available on PyPI under the name stats. Just change statistics to stats.
share
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Freeze the top row for an html table only (Fixed Table Header Scrolling) [duplicate]
... sticky; /* and other browsers */
– Jørgen Rudolph Låker
Mar 17 at 12:21
1
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推荐引擎easyrec半天学习分享 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...一段调用代码：
$(function(){
$.getJSON(
"/easyrec-web/api/1.0/json/otherusersalsoviewed?apikey=32b0c25e6bc63bf1627dc7e877f81b3d&tenantid=EASYREC_DEMO&itemid=43",
function(transport) {
var json = eval(transport);
var items = json.recommendeditems.item;
if( "undefined" == t...
Set Colorbar Range in matplotlib
... ( (0.0, 0.0, 0.0), (0.02, .45, .45), (1., .97, .97)),
'blue' : ( (0.0, 1.0, 1.0), (0.02, .75, .75), (1., 0.45, 0.45))
}
cm = m.colors.LinearSegmentedColormap('my_colormap', cdict, 1024)
x = np.arange(0, 10, .1)
y = np.arange(0, 10, .1)
X, Y = np.meshgrid(x,y)
data = 2*( np.sin(X) + np.sin(3*Y...
How to customize a requirements.txt for multiple environments?
...is:
common.txt:
# Contains requirements common to all environments
req1==1.0
req2==1.0
req3==1.0
...
dev.txt:
# Specifies only dev-specific requirements
# But imports the common ones too
-r common.txt
dev_req==1.0
...
prod.txt:
# Same for prod...
-r common.txt
prod_req==1.0
...
Outside of ...
Moment.js - how do I get the number of years since a date, not rounded up?
...
In moment.js v2.3.1 there is a .fromNow() method which can also be helpful.
– Lucas Lazaro
Oct 25 '13 at 23:17
add a...
How to link to apps on the app store
...2 for the set)
Replace accented and other "decorated" characters (ü, å, etc.) with their elemental character (u, a, etc.)
Leave all other characters as-is.
Listing 2 Punctuation characters that must be removed.
!¡"#$%'()*+,-./:;<=>¿?@[]^_`{|}~
Below are some examp...
Difference between JSP EL, JSF EL and Unified EL [closed]
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Jun 2002: JSTL 1.0 was introduced with EL for first time. It were those ${} things which works in JSTL tags only. It is designed to call Javabean get methods.
Nov 2003: JSP 2.0 was introduced and EL was moved from JSTL 1.0 to JSP 2.0 in jav...