大约有 40,000 项符合查询结果（耗时：0.0367秒） [XML]
Returning value from called function in a shell script
...ere's how to do each of those options:
1. Echo strings
lockdir="somedir"
testlock(){
retval=""
if mkdir "$lockdir"
then # Directory did not exist, but it was created successfully
echo >&2 "successfully acquired lock: $lockdir"
retval="true"
else
ec...
What IDE to use for Python? [closed]
...emplates
Integrated Python Debugging -. | | | | | | | | .- Unit Testing
Multi-Language Support -. | | | | | | | | | | .- GUI Designer (Qt, Eric, etc)
Auto Code Completion -. | | | | | | | | | | | | .- Integrated DB Support
Commercial/Free -. | | | |...
How to remove a Gitlab project?
I have created several repositories in GitLab. One of those was for testing purposes and has some commits and branches. I want to delete or remove this repository. How can I do this?
...
Node.js create folder or use existing
...ject.fs.mkdirSync (fs.js:747:18) at mkdirpSync (C:\Users\MAXIM\Desktop\test\1.js:15:8) at Object.<anonymous> (C:\Users\MAXIM\Desktop\test\1.js:19:1) ... Could you suggest what could be wrong? Used on windows obviously :)
– Alendorff
May 22 '1...
Nearest neighbors in high-dimensional data?
...use n=3. In any event, it's simple to run your kNN algorithm over a set of test instances (to calculate predicted values) for n=1, n=2, n=3, etc. and plot the error as a function of n. If you just want a plausible value for n to get started, again, just use n = 3.
The second component is how to wei...
How to convert a double to long without casting?
...you unknowingly try to convert a Double that is outside of Long's range:
@Test
public void test() throws Exception {
// Confirm that LONG is a subset of DOUBLE, so numbers outside of the range can be problematic
Assert.isTrue(Long.MAX_VALUE < Double.MAX_VALUE);
Assert.isTrue(Long.MIN...
What is pseudopolynomial time? How does it differ from polynomial time?
...ng about algorithms that operate on numbers. Let's consider the problem of testing whether a number is prime or not. Given a number n, you can test if n is prime using the following algorithm:
function isPrime(n):
for i from 2 to n - 1:
if (n mod i) = 0, return false
return true
S...
Is the Javascript date object always one day off?
...
yes i have tested this all, and its really strange.
– chintan adatiya
Jun 22 '16 at 16:18
28
...
How to capture the browser window close event?
...
For a cross-browser solution (tested in Chrome 21, IE9, FF15), consider using the following code, which is a slightly tweaked version of Slaks' code:
var inFormOrLink;
$('a').live('click', function() { inFormOrLink = true; });
$('form').bind('submit', fu...
How to check if an object is a certain type
...lso use the TypeOf operator instead of the GetType method. Note that this tests if your object is compatible with the given type, not that it is the same type. That would look like this:
If TypeOf Obj Is System.Web.UI.WebControls.DropDownList Then
End If
Totally trivial, irrelevant nitpick: T...