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Hide Utility Class Constructor : Utility classes should not have a public or default constructor
...our code. Additionally, you can make the class final, so that it can't be extended in subclasses, which is a best practice for utility classes. Since you declared only a private constructor, other classes wouldn't be able to extend it anyway, but it is still a best practice to mark the class as fina...
How to clear gradle cache?
...adle cache locates at
On Windows: %USER_HOME%\.gradle/caches/
On Mac/Unix: ~/.gradle/caches/
You can browse to these directory and manually delete it or run
rm -rf $HOME/.gradle/caches/
on Unix system. Run this command will also force to download dependencies.
Update 2: Clear the Android b...
Format numbers to strings in Python
...thon 2.6, there is an alternative: the str.format() method. Here are some examples using the existing string format operator (%):
>>> "Name: %s, age: %d" % ('John', 35)
'Name: John, age: 35'
>>> i = 45
>>> 'dec: %d/oct: %#o/hex: %#X' % (i, i, i)
'dec: 45/oct: 055/hex:...
“:” (colon) in C struct - what does it mean? [duplicate]
...d uses. Here is a quote from MSDN describing bit fields:
The constant-expression specifies the width of the field in bits. The
type-specifier for the declarator must be unsigned int, signed int, or
int, and the constant-expression must be a nonnegative integer value.
If the value is zero, ...
What is the argument for printf that formats a long?
...
printf("%ld", ULONG_MAX) outputs the value as -1. Should be printf("%lu", ULONG_MAX) for unsigned long as described by @Blorgbeard below.
– jammus
Nov 12 '11 at 16:03
...
Unzipping files in Python
...pfile
with zipfile.ZipFile(path_to_zip_file, 'r') as zip_ref:
zip_ref.extractall(directory_to_extract_to)
That's pretty much it!
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What does the Subversion status symbol “~” mean?
...are right. It is a directory now without a .svn file. Any idea on how to fix that? Do I need to delete it from subversion and add it again?
– jergason
May 12 '09 at 15:47
...
Creating a daemon in Linux
In Linux I want to add a daemon that cannot be stopped and which monitors filesystem changes.
If any changes are detected, it should write the path to the console where it was started plus a newline.
...
How to convert a char to a String?
...efficient
// #2
String stringValueOfCharArray = String.valueOf(new char[]{x});
// #3
String characterToString = Character.toString('c');
// #4
String characterObjectToString = new Character('c').toString();
// #5
// Although this method seems very simple,
// this is less efficient because...
How to delete last item in list?
...e question correctly, you can use the slicing notation to keep everything except the last item:
record = record[:-1]
But a better way is to delete the item directly:
del record[-1]
Note 1: Note that using record = record[:-1] does not really remove the last element, but assign the sublist to r...