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How to select a node using XPath if sibling node has a specific value?
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Not sure why everybody is querying for siblings, you can also check for <bb/>-elements matching the predicate from <a/>'s predicate:
//a[bb/text() = "zz"]/cc/text()
share
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improve t...
Ubuntu running `pip install` gives error 'The following required packages can not be built: * freety
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To search for packages on Ubuntu/Debian based systems:
apt-cache search <string>
e.g:
apt-cache search freetype | grep dev
Redhat/CentOS/Fedora:
yum -y install freetype-devel
To search for packages on Redhat/CentOS/Fedora based systems:
yum search <string>
e.g:
yum search...
Javascript: How to loop through ALL DOM elements on a page?
...ll = document.getElementsByTagName("*");
for (var i=0, max=all.length; i < max; i++) {
// Do something with the element here
}
Note that you could use querySelectorAll(), if it's available (IE9+, CSS in IE8), to just find elements with a particular class.
if (document.querySelectorAll)
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How do lexical closures work?
...ate i and use its value, a common pattern is to set it as a parameter default: parameter defaults are evaluated when the def statement is executed, and thus the value of the loop variable is frozen.
The following works as expected:
flist = []
for i in xrange(3):
def func(x, i=i): # the *value...
Maximum size of a element
... @aroth, I ended up writing a wrapper around the canvas API that used multiple stacked <canvas> elements and automatically applied drawing instructions to the appropriate context.
– Brandon Gano
Apr 7 '14 at 1:50
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Inheriting class methods from modules / mixins in Ruby
...iables, etc.:
klass = Class.new do
def foo
"foo"
end
end
#=> #<Class:0x2b613d0>
klass.new.foo
#=> "foo"
Also in Ruby, you have the possibility of defining so-called singleton methods on objects. These methods get added as new instance methods to the special, hidden singleton ...
@RequestBody and @ResponseBody annotations in Spring
...ng the response body with the @ResponseBody annotation. I suggest you consult those sections. Also relevant: @RequestBody javadocs, @ResponseBody javadocs
Usage examples would be something like this:
Using a JavaScript-library like JQuery, you would post a JSON-Object like this:
{ "firstName" : "...
Android - implementing startForeground for a service?
...GORY_SERVICE) instead of Notification.CATEGORY_SERVICE if your min API is < 21
– Someone Somewhere
Jun 26 '18 at 14:20
6
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Appending a line to a file only if it does not already exist
...licated expressions, of course. Mine uses the echo to trigger a cat of a multiline heredoc into a config file.
– Eric L.
Jun 15 '15 at 16:10
2
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Unit Testing AngularJS directive with templateUrl
...able to unit tests without Karma
//
// Disclaimer: Not using Karma may result in bad karma.
beforeEach(inject(function($templateCache) {
var directiveTemplate = null;
var req = new XMLHttpRequest();
req.onload = function() {
directiveTemplate = this.responseText;
};
// No...