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How do I check that a Java String is not all whitespaces?
...uch as:
if (string.matches(".*\\w.*")) ...
...which checks for at least one (ASCII) alphanumeric character.
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How to define optional methods in Swift protocol?
...rm to such protocol. It's always either concrete implementation or default one. This is how "interfaces" or "contracts" behave in other languages.
Disadvantages
For non-Void requirements, you need to have a reasonable default value, which is not always possible. However, when you encounter this ...
Why does the use of 'new' cause memory leaks?
...ing with C++. As I understand, operator new in C++ is not similar to the one in C#.
9 Answers
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How can I delete all of my Git stashes at once?
...from the stash list. When no <stash> is given, it removes the latest one. (...) ") does not answer the question (" How can I delete all of my Git stashes at once? ")?
– Tadeck
Sep 2 '15 at 15:48
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Custom fonts and XML layouts (Android)
...here is no way to specify that your widgets should use a custom font (e.g. one you've placed in assets/font/) in XML files and you can only use the system installed fonts.
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What is a good choice of database for a small .NET application? [closed]
...out liking a Microsoft product I suppose :-)
I use Sterling for Windows Phone programming as it is built to use Isolated Storage. I have only seen articles on RavenDb, but I can tell you that it is a JSON based document storage framework.
Not to confuse the situation (go with SQLite, SQL Server E...
How can I keep my fork in sync without adding a separate remote?
Let's assume there is a repository someone/foobar on GitHub, which I forked to me/foobar .
6 Answers
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How to call an external command?
... Hello World").read()
but it is nice to have all of the options there in one unified class instead of 4 different popen functions. See the documentation.
The call function from the subprocess module. This is basically just like the Popen class and takes all of the same arguments, but it simply w...
Find location of a removable SD card
...s of this, particularly if you want the low-level details.
Second, lest anyone quibble on whether or not removable media access is otherwise part of the Android SDK, here is Dianne Hackborn's assessment:
...keep in mind: until Android 4.4, the official Android platform has not supported SD cards at...
Best Practice: Initialize JUnit class fields in setUp() or at declaration?
...eption, testEmptyCollection, and the like. The perspective there is of someone writing a class and making sure it works right.
You should probably do the same when testing your own classes: create your object in setUp or in a test method, so that you'll be able to get reasonable output if you break...