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How to check if hex color is “too black”?
...rceived brightness.
Assuming a six character colour:
var c = c.substring(1); // strip #
var rgb = parseInt(c, 16); // convert rrggbb to decimal
var r = (rgb >> 16) & 0xff; // extract red
var g = (rgb >> 8) & 0xff; // extract green
var b = (rgb >> 0) & 0xff;...
Auto-center map with multiple markers in Google Maps API v3
...new google.maps.Marker({
position: new google.maps.LatLng(locations[i][1], locations[i][2]),
map: map
});
//extend the bounds to include each marker's position
bounds.extend(marker.position);
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function(...
How to use my view helpers in my ActionMailer views?
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edited May 29 '12 at 11:27
Daniel Magliola
26.5k5656 gold badges153153 silver badges235235 bronze badges
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VBoxManage: error: Failed to create the host-only adapter
I am running vagrant 1.4 and virtual box 4.3 on fedora 17 machine. When I do "vagrant up", I get this error:
32 Answers...
No tests found with test runner 'JUnit 4'
...
41 Answers
41
Active
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How to create a GUID/UUID in Python
...;>> import uuid
>>> uuid.uuid4()
UUID('bd65600d-8669-4903-8a14-af88203add38')
>>> str(uuid.uuid4())
'f50ec0b7-f960-400d-91f0-c42a6d44e3d0'
>>> uuid.uuid4().hex
'9fe2c4e93f654fdbb24c02b15259716c'
...
MFC CSyncObject，CSingleLock，CMultiLock同步类 - C/C++ - 清泛网 - 专注C/C++及内核技术
...们就是前面提到的线程的同步对象。
二、CSyncObject
1、纯虚类，作为具体同步类的基类，它只作为一个接口使用
2、有两个关键的成员函数Lock()、UnLock()，CSyncObject后面的四类都通过这两个统一接口进行同步操作。
1...
Pandas conditional creation of a series/dataframe column
...', 'green', 'red')
print(df)
yields
Set Type color
0 Z A green
1 Z B green
2 X B red
3 Y C red
If you have more than two conditions then use np.select. For example, if you want color to be
yellow when (df['Set'] == 'Z') & (df['Type'] == 'A')
otherwise blu...
Is R's apply family more than syntactic sugar?
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154
The apply functions in R don't provide improved performance over other looping functions (e.g....
In Flux architecture, how do you manage Store lifecycle?
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124
In a Flux app there should only be one Dispatcher. All data flows through this central hub. ...