大约有 15,461 项符合查询结果（耗时：0.0567秒） [XML]
Is it not possible to stringify an Error using JSON.stringify?
...
configurable: true,
writable: true
});
var error = new Error('testing');
error.detail = 'foo bar';
console.log(JSON.stringify(error));
// {"message":"testing","detail":"foo bar"}
Using Object.defineProperty() adds toJSON without it being an enumerable property itself.
Regarding mo...
Will console.log reduce JavaScript execution performance?
...with the same static text (no object or array; literally just console.log('test') would do it) also causes a performance hit. This came to my attention as I was logging "called" within a function that got invoked on hundreds of React components during re-renders. The mere presence of the logging cod...
How can I share code between Node.js and the browser?
...e as window):
(function(exports){
// Your code goes here
exports.test = function(){
return 'hello world'
};
})(typeof exports === 'undefined'? this['mymodule']={}: exports);
Alternatively there are some projects aiming to implement the Node.js API on the client side, such as...
Calling a Method From a String With the Method's Name in Ruby
...6
Using eval
eval "s.length" #=> 6
Benchmarks
require "benchmark"
test = "hi man"
m = test.method(:length)
n = 100000
Benchmark.bmbm {|x|
x.report("call") { n.times { m.call } }
x.report("send") { n.times { test.send(:length) } }
x.report("eval") { n.times { eval "test.length" }...
Debugging Package Manager Console Update-Database Seed Method
... the Seed method.
You may take this one step further and construct a unit test (or, more precisely, an integration test) that creates an empty test database, applies all EF migrations, runs the Seed method, and drops the test database again:
var configuration = new DbMigrationsConfiguration<TCo...
Bash, no-arguments warning, and case decisions
...k as intended using this exact format. Upon reading your response I even retested both for the match and lack thereof. $# will not contain a value if not specified, if there is no positional argument to match what ever # is in your scenario. It makes no sense why bash would assume a value in a posi...
Create a string of variable length, filled with a repeated character
...ls.
On Firefox, Chrome, Node.js MacOS, Node.js Ubuntu, and Safari, the fastest implementation I tested was:
function repeatChar(count, ch) {
if (count == 0) {
return "";
}
var count2 = count / 2;
var result = ch;
// double the input until it is long enough.
while (...
Controlling the screenshot in the iOS 7 multitasking switcher
...hot is still taken and I have therefore filed a bug report. But you should test further and see if using this setting helps.
If this was an enterprise app, you might also want to look into the appropriate setting of allowScreenShot outlined in the Restrictions Payload section of the Configuration P...
When is an interface with a default method initialized?
...initialization. The example as follows:
interface I {
int i = 1, ii = Test.out("ii", 2);
}
interface J extends I {
int j = Test.out("j", 3), jj = Test.out("jj", 4);
}
interface K extends J {
int k = Test.out("k", 5);
}
class Test {
public static void main(String[] args) {
Sy...
java.lang.OutOfMemoryError: Java heap space
...better for it.
To determine where the memory leak may be you can use unit tests for that, by testing what was the memory before the test, and after, and if there is too big a change then you may want to examine it, but, you need to do the check while your test is still running.
...