大约有 31,100 项符合查询结果(耗时:0.0635秒) [XML]
Change R default library path using .libPaths in Rprofile.site fails to work
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I generally try to keep all of my packages in one library, but if you want to add a library why not append the new library (which must already exist in your filesystem) to the existing library path?
.libPaths( c( .libPaths(), "~/userLibrary") )
Or (and ...
Equation for testing if a point is inside a circle
...times by time ./a.out
I implemented this method, a normal method and a dummy method to determine timing overhead.
Normal: 21.3s
This: 19.1s
Overhead: 16.5s
So, it seems this method is more efficient in this implementation.
// compile gcc -O3 <filename>.c
// run: time ./a.out
#include <...
REST vs JSON-RPC? [closed]
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For me, my current team and previous teams, RESTful web services are for CRUD type applications. Regarding "Do we rewrite browsers each time when something changes on server?" - no, because browsers are just HTTP executors, they have...
Javascript checkbox onChange
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Pure javascript:
const checkbox = document.getElementById('myCheckbox')
checkbox.addEventListener('change', (event) => {
if (event.target.checked) {
alert('checked');
} else {
alert('not checked');
}
})
My Checkbox: <input id="myCheckbox" type="checkbox"...
Swift native base class or NSObject
...ectly spots the error in testIncorrect_CompilerShouldSpot,
reporting "... 'MyClass' is not convertible to 'MirrorDisposition'"
class MyClass {
let mString = "Test"
func getAsString() -> String {
return mString
}
func testIncorrect_CompilerShouldSpot() {
var myString = "Compare ...
How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
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I was just wrestling with a similar problem myself, but didn't want the overhead of a function. I came up with the following query:
SELECT myfield::integer FROM mytable WHERE myfield ~ E'^\\d+$';
Postgres shortcuts its conditionals, so you shouldn't get any non-inte...
git rebase fatal: Needed a single revision
I have a branch of a public repository and I am trying to update my branch with the current commits from the original repository:
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Is there a “goto” statement in bash?
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"My quest to make bash look like assembly language draws ever nearer to completion." - Wow. Just, wow.
– Brian Agnew
Mar 8 '16 at 16:00
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Simplest way to profile a PHP script
...n. But maybe that's because for some reason APD didn't compile properly on my system. Also kcachegrind's charts were as pretty as promised.
– wxs
Dec 5 '08 at 16:23
1
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Create a shortcut on Desktop
... // setup shortcut information
link.SetDescription("My Description");
link.SetPath(@"c:\MyPath\MyProgram.exe");
// save it
IPersistFile file = (IPersistFile)link;
string desktopPath = Environment.GetFolderPath(Environment.Specia...
