大约有 15,000 项符合查询结果(耗时:0.0226秒) [XML]
Concept behind these four lines of tricky C code
...nt by one. Your program does it precisely 771 times, so the exponent which started at 1075 (decimal representation of 10000110011) becomes 1075 + 771 = 1846 at the end; binary representation of 1846 is 11100110110. The resultant pattern looks like this:
01110011 01101011 01100011 01110101 01010011 ...
Animate change of view background color on Android
...able transition = (TransitionDrawable) viewObj.getBackground();
transition.startTransition(transitionTime);
Or run the transition in reverse by calling:
transition.reverseTransition(transitionTime);
See Roman's answer for another solution using the Property Animation API, which wasn't availab...
Can't install nuget package because of “Failed to initialize the PowerShell host”
...set the policy to unrestricted (as noted by @Gabriel in the comments) is:
start-job { Set-ExecutionPolicy Unrestricted } -RunAs32 | wait-job | Receive-Job
Having set the policy to unrestricted, you will want to set the policy back to its original after the install is complete.
...
Getting time elapsed in Objective-C
...
NSDate *start = [NSDate date];
// do stuff...
NSTimeInterval timeInterval = [start timeIntervalSinceNow];
timeInterval is the difference between start and now, in seconds, with sub-millisecond precision.
...
How do I replace text in a selection?
I've just started using Sublime Text 2, coming from emacs.
11 Answers
11
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Intent - if activity is running, bring it to front, else start a new one (from notification)
My app has notifications, which - obviously - without any flags, start a new activity every time so I get multiple same activities running on top of each other, which is just wrong.
...
How to use ng-repeat for dictionaries in AngularJs?
...mention a new functionality of AngularJS ng-repeat, namely, special repeat start and end points. That functionality was added in order to repeat a series of HTML elements instead of just a single parent HTML element.
In order to use repeater start and end points you have to define them by using ng-...
How do I find the time difference between two datetime objects in python?
...markcial: delorean misrepresents datetime, pytz approach e.g., the getting started code example could be written as d = datetime.now(timezone(EST)) (one readable line instead of five).
– jfs
Jan 10 '15 at 8:57
...
Calculate date from week number
...= 1)
{
weekNum -= 1;
}
// Using the first Thursday as starting week ensures that we are starting in the right year
// then we add number of weeks multiplied with days
var result = firstThursday.AddDays(weekNum * 7);
// Subtract 3 days from Thursday to get Monday, wh...
Check if an element is present in an array [duplicate]
...ed the polyfill)
var array = [0,1,2,3,4,5,6,7,8,9];
var result = 0;
var start = new Date().getTime();
for(var i = 0; i < 10000000; i++)
{
if(array.includes("test") === true){ result++; }
}
console.log(new Date().getTime() - start);
~ 1050 ms, indexOf
var array = [0,1,2,3,4,5,6,7,8,9];
...
