大约有 921 项符合查询结果（耗时：0.0134秒） [XML]
Map function in MATLAB?
...Is there a better version out there? Is there a somewhat-standard functional programming library for MATLAB out there that I'm missing?
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jquery find closest previous sibling with class
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Try:
$('li.current_sub').prevAll("li.par_cat:first");
Tested it with your markup:
$('li.current_sub').prevAll("li.par_cat:first").text("woohoo");
will fill up the closest previous li.par_cat with "woohoo".
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Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
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psql's inline help:
\h ALTER TABLE
Also documented in the postgres docs (an excellent resource, plus easy to read, too).
ALTER TABLE tablename ADD CONSTRAINT constraintname UNIQUE (columns);
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NodeJS - Error installing with NPM
I am installing a certain NodeJS script - Caress . But i am not unable to. I am using Windows 8.1, can anyone tell me what is the problem i am facing, and why is this installation not working. There seems to be a problem with the buffertools dependency, thats far as i can think. Dont know how maybe...
Does anyone have benchmarks (code & results) comparing performance of Android apps written in Xamari
...d their C# compiled apps are faster than Java code. Did anyone perform actual benchmarks on very similar Java and C# code on different Android platforms to verify such claims, could post the code and results?
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What is an idiomatic way of representing enums in Go?
... iota // y == 0 (iota has been reset)
Within an ExpressionList, the value of each iota is the same because it is only incremented after each ConstSpec:
const (
bit0, mask0 = 1 << iota, 1<<iota - 1 // bit0 == 1, mask0 == 0
bit1, mask1 // ...
What is Scala's yield?
I understand Ruby and Python's yield. What does Scala's yield do?
9 Answers
9
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Finding the path of the program that will execute from the command line in Windows
Say I have a program X.EXE installed in folder c:\abcd\happy\ on the system. The folder is on the system path. Now suppose there is another program on the system that's also called X.EXE but is installed in folder c:\windows\ .
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What is the difference between typeof and instanceof and when should one be used vs. the other?
...ssFirst();
typeof instance; // object
typeof instance == 'ClassFirst'; // false
instance instanceof Object; // true
instance instanceof ClassFirst; // true
instance instanceof ClassSecond; // false
Use typeof for simple built in types:
'example string' instanceof String; // false
typeof 'example...
How do I detect when someone shakes an iPhone?
...n selecting this new type instead of the base type in IB, or using it when allocating a view).
In the view controller, you want to set this view to become first responder:
- (void) viewWillAppear:(BOOL)animated
{
[shakeView becomeFirstResponder];
[super viewWillAppear:animated];
}
- (void)...