大约有 40,000 项符合查询结果（耗时：0.0703秒） [XML]
Does Parallel.ForEach limit the number of active threads?
...on't start 1000 threads - yes, it will limit how many threads are used. Parallel Extensions uses an appropriate number of cores, based on how many you physically have and how many are already busy. It allocates work for each core and then uses a technique called work stealing to let each thread proc...
How to migrate back from initial migration in Django 1.7?
...lt;app> zero
This clears <app> from migration history and drops all tables of <app>
See django docs for more info.
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What is the Java equivalent for LINQ? [closed]
...cification, not an implementation... Lambda expressions is a part of LINQ. All projects trying to port LINQ to Java are implementations for a concrete scenario (SQL, Objects...) but does not covr the main goal of LINQ: Integrate the Language Query in the code. Due to this, there is no real alternati...
How do I delete an item or object from an array using ng-click?
...xOf(item);
$scope.bdays.splice(index, 1);
}
Angular will automatically detect the change to the bdays array and do the update of ng-repeat
DEMO: http://plnkr.co/edit/ZdShIA?p=preview
EDIT: If doing live updates with server would use a service you create using $resource to manage the arra...
How to pretty print XML from Java?
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Back in 2008 this was a good answer, but now this can all be done with standard JDK classes rather than Apache classes. See xerces.apache.org/xerces2-j/faq-general.html#faq-6. Yes this is a Xerces FAQ but the answer covers standard JDK classes. The initial 1.5 implementation of ...
Add params to given URL in Python
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@florian : At least in python 2.7 you then need to call urlencode as urllib.urlencode(query, doseq=True). Otherwise, parameters that existed in the original url are not preserved correctly (because they are returned as tuples from @parse_qs@
– rluba
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What is function overloading and overriding in php?
...that method.
In PHP, you can only overload methods using the magic method __call.
An example of overriding:
<?php
class Foo {
function myFoo() {
return "Foo";
}
}
class Bar extends Foo {
function myFoo() {
return "Bar";
}
}
$foo = new Foo;
$bar = new Bar;
echo($foo-&...
Is there a way to make text unselectable on an HTML page? [duplicate]
...e. Likewise, I believe, with the querySelector API which I'm guessing typically hooks into the CSS/xpath selector engines directly. This may change over time as browsers find perf tweaks but I would definitely keep this in mind when supporting IE<=8, maybe <=9.
– Erik Re...
Split data frame string column into multiple columns
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Use stringr::str_split_fixed
library(stringr)
str_split_fixed(before$type, "_and_", 2)
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Unzip All Files In A Directory
I have a directory of ZIP files (created on a Windows machine). I can manually unzip them using unzip filename , but how can I unzip all the ZIP files in the current folder via the shell?
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