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Android notification is not showing

... The code won't work without an icon. So, add the setSmallIcon call to the builder chain like this for it to work: .setSmallIcon(R.drawable.icon) Android Oreo (8.0) and above Android 8 introduced a new requirement of setting the channelId property by using a NotificationChannel...
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How do you remove a Cookie in a Java Servlet

... I tried setMaxAge(0) initially in firefox but I still saw it listed in my cookies as "Expires: at end of session" and thought my servlet was still receiving that expired cookie. It might've been a combo of needing to set the response.setContentType(...
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Permission denied on accessing host directory in Docker

.../db:/var/db:z rhel7 /bin/sh Will automatically do the chcon -Rt svirt_sandbox_file_t /var/db described in the man page. Even better, you can use Z. docker run -v /var/db:/var/db:Z rhel7 /bin/sh This will label the content inside the container with the exact MCS label that the c...
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Peak detection in a 2D array

...ood = generate_binary_structure(2,2) #apply the local maximum filter; all pixel of maximal value #in their neighborhood are set to 1 local_max = maximum_filter(image, footprint=neighborhood)==image #local_max is a mask that contains the peaks we are #looking for, but also the ...
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How do I check if a directory exists? “is_dir”, “file_exists” or both?

...post input and uses it as-is, plus makes 0777 dir, prolly not that safe at all ;P – sEver Aug 20 '13 at 16:45 2 ...
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Most efficient T-SQL way to pad a varchar on the left to a certain length?

...ecause you are dealing with a fixed length). But as I said you should really avoid doing this in your database. share | improve this answer | follow | ...
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How to present popover properly in iOS 8

... you talk to the view controller inside of it to set the content size, by calling the property preferredContentSize share | improve this answer | follow | ...
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How can I dynamically create a selector at runtime with Objective-C?

... theMethod:(id)methodArg];, you'd write... void (^impBlock)(id,id) = ^(id _self, id methodArg) { [_self doSomethingWith:methodArg]; }; and then you need to generate the IMP block dynamically, this time, passing, "self", the SEL, and any arguments... void(*impFunct)(id, SEL, id) = (void*...
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Retrieving Property name from lambda expression

...rce parameter is used so the compiler can do type inference on the method call. You can do the following var propertyInfo = GetPropertyInfo(someUserObject, u => u.UserID); share | improve this ...
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Is there a numpy builtin to reject outliers from a list

...ng like the following? That is, take a list d and return a list filtered_d with any outlying elements removed based on some assumed distribution of the points in d . ...