大约有 5,475 项符合查询结果（耗时：0.0191秒） [XML]
Android:What is difference between setFlags and addFlags for intent
...a integer which is power of two... in binary, flags look like this: 1, 10, 100, 1000, etc... (which in this case are 1, 2, 4, 8). So, what addFlags does is appending the integer you pass using the | operator.
// example...
// value of flags: 1
intent.setFlags(2|4);
// now flags have this value: 1...
How to sort an array of associative arrays by value of a given key in PHP?
...1-dev) array_multisort() is a few percent faster on small arrays and up to 100 times faster on big arrays (100+ elements)
– Josh Davis
Oct 22 '09 at 2:49
3
...
How do I resolve “Cannot find module” error using Node.js?
...ce is cheap". I have libraries that I am using. The idea that I might have 100 copies (or worse, NEAR copies) makes my stomach turn. Disk space is cheap, but maintenance time is expensive. Perhaps if you are doing a one-off toy project, maintenance is cheap. For real work, however, maintenance is ex...
How to copy a row and insert in same table with a autoincrement field in MySQL?
...
I think it's pretty good if you have a table with 100 of fields. Except there might be a not null constraint on the id which makes it fail
– Loïc Faure-Lacroix
Nov 30 '16 at 20:47
...
How to efficiently build a tree from a flat structure?
...hich implements a O(n) solution, I created the following one (unit tested, 100% code coverage, only 0.5 kb in size and includes typings. Maybe it helps someone: npmjs.com/package/performant-array-to-tree
– Philip Stanislaus
May 7 '17 at 17:29
...
How to disable margin-collapsing?
...ildren {
margin-top: 50px;
background-color: lime;
width: 100px;
height: 100px;
}
<h3>Border collapsing</h3>
<div class="parent">
<div class="children">
</div>
</div>
<h3>No border collapsing</h3>
<div class="parent...
Exact time measurement for performance testing [duplicate]
... }
public static void BenchmarkTime(Action action, int iterations = 10000)
{
Benchmark<TimeWatch>(action, iterations);
}
static void Benchmark<T>(Action action, int iterations) where T : IStopwatch, new()
{
//clean Garbage
GC.Collect();
...
Creating an R dataframe row-by-row
...ith automatic column name
df<-data.frame(
t(data.frame(c(1,"a",100),c(2,"b",200),c(3,"c",300)))
,row.names = NULL,stringsAsFactors = FALSE
)
With column name
df<-setNames(
data.frame(
t(data.frame(c(1,"a",100),c(2,"b",200),c(3,"c",300)))
...
How do JavaScript closures work?
...
+100
A closure is a pairing of:
A function, and
A reference to that function's outer scope (lexical environment)
A lexical environment ...
Quickly create a large file on a Linux system
...
+100
This is a common question -- especially in today's environment of virtual environments. Unfortunately, the answer is not as straight...