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How to format strings in Java
...%f - insert a real number, standard notation
This is radically different from C#, which uses positional references with an optional format specifier. That means that you can't do things like:
String.format("The {0} is repeated again: {0}", "word");
... without actually repeating the parameter p...
Random shuffling of an array
...ublic class Util {
private static Random random;
/**
* Code from method java.util.Collections.shuffle();
*/
public static void shuffle(int[] array) {
if (random == null) random = new Random();
int count = array.length;
for (int i = count; i > 1; i--...
How to hide UINavigationBar 1px bottom line
...ow image to be shown you also need to set a custom background image, quote from Apple's documentation:
For a custom shadow image to be shown, a custom background image must
also be set with the setBackgroundImage(_:for:) method. If the default
background image is used, then the default shado...
Pretty-print C++ STL containers
...tor> class map;
}
// Basic is_container template; specialize to derive from std::true_type for all desired container types
template<typename T> struct is_container : public std::false_type { };
// Mark vector as a container
template<typename T, typename TAllocator> struct is_contain...
Named placeholders in string formatting
...h means you can decide a position for a key in the list of arguments. from now on value will be known as 0 and column as 1: MessageeFormat.format("There's an incorrect value \"{0}\" in column # {1}, using {0} as value can cause many problems", valueMap.get('value'), valueMap.get('column'))...
Check if a Python list item contains a string inside another string
...['abc-123', 'abc-456'])
The test for iterable may not be the best. Got it from here: In Python, how do I determine if an object is iterable?
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Create zip file and ignore directory structure
...d global paths, because you have no idea what the global path will be. But from the cd path/to/parent/dir/ you can calculate number of double dots ../ easily.
– eddyP23
Jan 31 '19 at 11:53
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Maven compile with multiple src directories
...pse, you might want to install m2e connector for build-helper-maven-plugin from eclipse marketplace to remove the error in pom.xml
– dieend
Sep 23 '15 at 7:57
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How do you display JavaScript datetime in 12 hour AM/PM format?
...s "4:04 PM" instead of "4:4 PM". Note that in the process, minutes changes from a Number to a String.
– Caleb Bell
Jun 29 '13 at 21:05
7
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Ruby - elegantly convert variable to an array if not an array already
...the argument. This is documented in official ruby docs. I learned about it from Avdi's "Confident Ruby" book.
– mambo
Jul 27 '16 at 15:41
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