大约有 40,000 项符合查询结果（耗时：0.0332秒） [XML]
UnboundLocalError on local variable when reassigned after first use
... The variable scope decision is made by the compiler, which normally runs once when you first start the program. However it is worth keeping in mind that the compiler might also run later if you have "eval" or "exec" statements in your program.
– Greg Hewgill
...
How to execute shell command in Javascript
...Except for one thing. You'll get the error "child is not a function". The call to exec() executes the command - no need to call child(). Unfortunately, the callback isn't called whenever the child process has something to output - it is called only when the child process exits. Sometimes that's OK a...
How to split a string, but also keep the delimiters?
...ve an obvious maximum length" trying to use this with a regex representing all real numbers.
– daveagp
May 28 '14 at 15:00
2
...
How to output only captured groups with sed?
...
Ask your sysadmin to install gsed. You'd be amazed at what a few donuts will get you...
– avgvstvs
Dec 11 '12 at 13:08
3
...
How Do I Document Packages in Java?
...java file and provide a standard javadoc style comment for a package:
com/foo/package-info.java:
/**
* com.foo is a group of bar utils for operating on foo things.
*/
package com.foo;
//rest of the file is empty
Language specification for packages
...
Solving “The ObjectContext instance has been disposed and can no longer be used for operations that
...creates proxy class for your entity and overrides navigation properties to allow lazy-loading. E.g. if you have this entity:
public class MemberLoan
{
public string LoandProviderCode { get; set; }
public virtual Membership Membership { get; set; }
}
Entity Framework will return proxy inheri...
Comparing two collections for equality irrespective of the order of items in them
...WriteLine(comp.Equals(new[] {"a","b","c"}, new[] {"a","b"})); //false
Finally, you can use your an equality comparer of your choice:
var strcomp = new MultiSetComparer<string>(StringComparer.OrdinalIgnoreCase);
Console.WriteLine(strcomp.Equals(new[] {"a", "b"}, new []{"B", "A"})); //true
...
Javascript dynamically invoke object method from string
...
if the name of the property is stored in a variable, use []
foo[method]();
share
|
improve this answer
|
follow
|
...
Find where java class is loaded from
...
Here's an example:
package foo;
public class Test
{
public static void main(String[] args)
{
ClassLoader loader = Test.class.getClassLoader();
System.out.println(loader.getResource("foo/Test.class"));
}
}
This printed out...
Returning multiple objects in an R function [duplicate]
... way to handle this is to return a list object. So if you have an integer foo and a vector of strings bar in your function, you could create a list that combines these items:
foo <- 12
bar <- c("a", "b", "e")
newList <- list("integer" = foo, "names" = bar)
Then return this list.
After...