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How do I check that a Java String is not all whitespaces?
...g is not all whitespaces, you can use the following:
StringUtils.isBlank(<your string>)
Here is the reference: StringUtils.isBlank
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How do you test that a Python function throws an exception?
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is there a way to allow for multiple exception types?
– Dinesh
Oct 30 '18 at 4:20
1
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Iterate a list as pair (current, next) in Python
...e that in python 3.x izip is suppressed of itertools and you should use builtin zip
– Xavier Combelle
Mar 25 '11 at 16:04
1
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App store link for “rate/review this app”
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This is not working anymore. What's working is <product-url>?action=write-review. Please check this documentation for a better understaning: developer.apple.com/documentation/storekit/…
– Karthik Kannan
Mar 22 '18 at 22:38
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Length of string in bash
...will not work, because it leaves LC_ALL alone. It might work fine on default installs of Debian and it's derivatives, but on others (like Arch Linux) it will fail to give the correct byte length of the string.
– Isabell Cowan
Jan 3 '17 at 18:49
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Removing Java 8 JDK from Mac
... to just remove the JDK
sudo rm -rf /Library/Java/JavaVirtualMachines/jdk<version>.jdk
Run these commands if you want to remove plugins
sudo rm -rf /Library/PreferencePanes/JavaControlPanel.prefPane
sudo rm -rf /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo rm -rf /Library/Launch...
Replacing a fragment with another fragment inside activity group
... @Ahmed The reason is that, by architecture, the system replaces every <fragment> tag with the view (group) provided by the corresponding fragments' onCreateView(). Thus, as you can assume, any reference to the fragment is actually lost at the view level. So, you basically cannot replace a ...
How can I format a nullable DateTime with ToString()?
...c static class DateTimeExtensions {
public static string ToStringOrDefault(this DateTime? source, string format, string defaultValue) {
if (source != null) {
return source.Value.ToString(format);
}
else {
return String.IsNullOrEmpty(defaultValue) ? String.Empty : defaultV...
How can I reload .emacs after changing it?
...mmand load-file (M-x load-file, then press return twice to accept the default filename, which is the current file being edited).
You can also just move the point to the end of any sexp and press C-xC-e to execute just that sexp. Usually it's not necessary to reload the whole file if you're just cha...
Get the current displaying UIViewController on the screen in AppDelegate.m
...Once you know the root view controller, then it depends on how you have built your UI, but you can possibly find out a way to navigate through the controllers hierarchy.
If you give some more details about the way you defined your app, then I might give some more hint.
EDIT:
If you want the topmo...