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src/lxml/etree_defs.h:9:31: fatal error: libxml/xmlversion.h: No such file or directory
while comming to install "lxml" packages i am getting the following eror
5 Answers
5
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How to add “on delete cascade” constraints?
...rop the foreign key,
add a foreign key with on delete cascade, and finally
commit the transaction
Repeat for each foreign key you want to change.
But PostgreSQL has a non-standard extension that lets you use multiple constraint clauses in a single SQL statement. For example
alter table public.sc...
How to iterate over the keys and values in an object in CoffeeScript?
...nsider the variant for own k,v of ages as mentioned by Aaron Dufour in the comments. This adds a check to exclude properties inherited from the prototype, which is probably not an issue in this example but may be if you are building on top of other stuff.
...
Updating address bar with new URL without hash or reloading the page
...afari, FF4+, and IE10pp3+! (From David Murdoch's answer to stackoverflow.com/questions/824349/… )
– Zach Lysobey
Dec 19 '11 at 17:48
11
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Fastest way to convert Image to Byte array
...Desktop sharing application in which I capture an image of the Desktop and Compress it and Send it to the receiver. To compress the image I need to convert it to a byte[].
...
Long-lasting FB access-token for server to pull FB page info
...nto a long-lived one by making this Graph API call:
https://graph.facebook.com/oauth/access_token?client_id=<your FB App ID >&client_secret=<your FB App secret>&grant_type=fb_exchange_token&fb_exchange_token=<your short-lived access token>
Grab the new long-lived access...
How can I create download link in HTML?
..." you mean a link to a file to download, use
<a href="http://example.com/files/myfile.pdf" target="_blank">Download</a>
the target=_blank will make a new browser window appear before the download starts. That window will usually be closed when the browser discovers that the resource...
Manipulate a url string by adding GET parameters
...lse {
$url .= '?category=1';
}
More advanced
$url = 'http://example.com/search?keyword=test&category=1&tags[]=fun&tags[]=great';
$url_parts = parse_url($url);
// If URL doesn't have a query string.
if (isset($url_parts['query'])) { // Avoid 'Undefined index: query'
parse_str(...
How do I call Objective-C code from Swift?
...thSomeArg:@"Arg"];
NSLog(@"RetString: %@", retString);
Notes:
If Code Completion isn't behaving as you expect, try running a quick build with ⌘⇧R to help Xcode find some of the Objective-C code from a Swift context and vice versa.
If you add a .swift file to an older project and get the er...