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explicit casting from super class to subclass
The assignment Dog dog = (Dog) animal; does not generate a compilation error, but at runtime it generates a ClassCastException . Why can't the compiler detect this error?
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CSS customized scroll bar in div
...sts no cross-browser scroll bar CSS styling definitions. The W3C article I mention at the end has the following statement and was recently updated (10 Oct 2014):
Some browsers (IE, Konqueror) support the non-standard properties 'scrollbar-shadow-color', 'scrollbar-track-color' and others. These ...
How do I write output in same place on the console?
I am new to python and am writing some scripts to automate downloading files from FTP servers, etc. I want to show the progress of the download, but I want it to stay in the same position, such as:
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Detach many subdirectories into a new, separate Git repository
...git reset -q $GIT_COMMIT -- apps/AAA libs/XXX' --prune-empty -- --all
As mentioned by void.pointer in his/her comment, this will remove everything except apps/AAA and libs/XXX from current repository.
Prune empty merge commits
This leaves behind lots of empty merges. These can be removed by anot...
Android Get Current timestamp?
I want to get the current timestamp like that : 1320917972
12 Answers
12
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Can we open pdf file using UIWebView on iOS?
...UIWebView.
If you are trying to display a PDF file residing on a server somewhere, you can simply load it in your web view directly:
Objective-C
UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(10, 10, 200, 200)];
NSURL *targetURL = [NSURL URLWithString:@"https://www.example.com/...
Gson: How to exclude specific fields from Serialization without annotations
...t it does to a few that I have used, including gson).
If you don't want name to show up in the serialized json give it a transient keyword, eg:
private transient String name;
More details in the Gson documentation
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Calling shell functions with xargs
...mmand preceding it. Also, if there's no error, it's the default and thus somewhat redundant.
@phobic mentions that the Bash command could be simplified to
bash -c 'echo_var "{}"'
moving the {} directly inside it. But it's vulnerable to command injection as pointed out by @Sasha.
Here is an exam...
Occurrences of substring in a string
Why is the following algorithm not halting for me?
(str is the string I am searching in, findStr is the string I am trying to find)
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How to display Base64 images in HTML?
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My suspect is of course actual base64 data, otherwise it looks good to me. See this fiddle where similar scheme is working. You may try specifying char set.
<div>
<p>Taken from wikpedia</p>
<img src="data:image/png;base64, iVBORw0KGgoAAAANSUhEUgAAAAUA
AAAFCAY...