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How To Check If A Key in **kwargs Exists?
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DSM's and Tadeck's answers answer your question directly.
In my scripts I often use the convenient dict.pop() to deal with optional, and additional arguments. Here's an example of a simple print() wrapper:
def my_print(*args, **kwargs):
prefix = kwargs.pop('prefix', '')
print(pre...
Position: absolute and parent height?
...while keeping the children as position: absolute, you could do so with JavaScript by finding the height of the absolutely positioned children after they have rendered, and using that to set the height of the parent.
Alternatively, just use float: left/float:right and margins to get the same positio...
Difference between attr_accessor and attr_accessible
...o submit a new salary to the controller update method, they could create a script that submits a post with that information.
So attr_accessor is about creating methods to store variables, and attr_accessible is about the security of mass assignments.
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The definitive guide to form-based website authentication [closed]
...y know how to build a login+password HTML form which POSTs the values to a script on the server side for authentication. The sections below will deal with patterns for sound practical auth, and how to avoid the most common security pitfalls.
To HTTPS or not to HTTPS?
Unless the connection is already...
How can I deploy an iPhone application from Xcode to a real iPhone device?
...project you make. Go to the menu Project > New Build Phase > New Run Script Build Phase. In the window, copy/paste this:
export CODESIGN_ALLOCATE=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/codesign_allocate
if [ "${PLATFORM_NAME}" == "iphoneos" ]; then
/Developer/iphoneentitleme...
Inspect element that only appear when other element is mouse overed/entered
...ElementById('id').dispatchEvent(new Event('event-type'));
(with pure javascript specific syntax may vary by browser)
Even easier with jQuery:
$('#id').trigger('event-type');
In your example (http://getbootstrap.com/javascript/#tooltips), open the console and type in, for example:
$("button:co...
Using i and j as variables in Matlab
... the gain in long-term maintainability for anything more than a throw-away script - even with the Matlab Editor being well behind most other modern IDEs.
– LightCC
Aug 13 '19 at 1:36
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How do I parse an ISO 8601-formatted date?
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To properly support the Z the input script can be modified with date_string.replace("Z", "+00:00").
– jox
Dec 2 '18 at 10:47
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What is the Git equivalent for revision number?
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@sdaau: If you are using this in a script or something and want git describe to never fail, use the git describe --always option.
– Greg Hewgill
Apr 21 '13 at 19:52
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iPhone App Minus App Store?
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With the help of this post, I have made a script that will install via the app Installous for rapid deployment:
# compress application.
/bin/mkdir -p $CONFIGURATION_BUILD_DIR/Payload
/bin/cp -R $CONFIGURATION_BUILD_DIR/MyApp.app $CONFIGURATION_BUILD_DIR/Payload
/bin...