大约有 40,000 项符合查询结果（耗时：0.0516秒） [XML]
Is there any way to use a numeric type as an object key?
...lds true. Semantically, this property can also be considered an "element" by virtue of having a numeric key, but there is nothing further that distinguishes an array "element" from an array property. Read the spec. If you still disagree, kindly cite your source.
– Hans
...
How can I use a file in a command and redirect output to the same file without truncating it?
...cause bash processes the redirections first, then executes the command. So by the time grep looks at file_name, it is already empty. You can use a temporary file though.
#!/bin/sh
tmpfile=$(mktemp)
grep -v 'seg[0-9]\{1,\}\.[0-9]\{1\}' file_name > ${tmpfile}
cat ${tmpfile} > file_name
rm -f ${...
Change SVN repository URL
... uuid column values to the new ones. You can find the UUID of the new repo by issuing svn info NEW_SERVER.
Again, treat this as a last resort method.
share
|
improve this answer
|
...
Detecting when user has dismissed the soft keyboard
...
I've been looking on several solution, this is by far the best!
– Friesgaard
Mar 20 '14 at 22:01
11
...
How can I update window.location.hash without jumping the document?
...
There is a workaround by using the history API on modern browsers with fallback on old ones:
if(history.pushState) {
history.pushState(null, null, '#myhash');
}
else {
location.hash = '#myhash';
}
Credit goes to Lea Verou
...
javascript scroll event for iPhone/iPad?
...g another answer to an old post but I usually get a scroll event very well by using this code (it works at least on 6.1)
element.addEventListener('scroll', function() {
console.log(this.scrollTop);
});
// This is the magic, this gives me "live" scroll events
element.addEventListener('gesturech...
How to access command line parameters?
...
You can access the command line arguments by using the std::env::args or std::env::args_os functions. Both functions return an iterator over the arguments. The former iterates over Strings (that are easy to work with) but panics if one of the arguments is not valid u...
Ways to circumvent the same-origin policy
...ould pass the origin check with http://company.com/dir/page.html. However, by the same reasoning, company.com could not set document.domain to othercompany.com.
With this method, you would be allowed to exectue javascript from an iframe sourced on a subdomain on a page sourced on the main domain. ...
What unique features does Firebug have that are not built-in to Firefox?
...built-in tools and forward all Firebug users to it.
Replace Firebug 2 by releasing Firebug 3 (on AMO) only if we have to deliver any critical features missing in Firefox developer tools in an extension.
We are currently working on porting XHR Inspector (bug 1211525), DOM panel (bug 1201475...
How do I filter ForeignKey choices in a Django ModelForm?
...
ForeignKey is represented by django.forms.ModelChoiceField, which is a ChoiceField whose choices are a model QuerySet. See the reference for ModelChoiceField.
So, provide a QuerySet to the field's queryset attribute. Depends on how your form is bui...