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What is the use of ByteBuffer in Java? [closed]
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This is a good description of its uses and shortcomings. You essentially use it whenever you need to do fast low-level I/O. If you were going to implement a TCP/IP protocol or if you were writing a database (DBMS) this class would come in handy.
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List comprehension in Ruby
To do the equivalent of Python list comprehensions, I'm doing the following:
17 Answers
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How to distinguish mouse “click” and “drag”
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How to check if a file exists in the Documents directory in Swift?
...ue)[0] as String
let url = NSURL(fileURLWithPath: path)
if let pathComponent = url.appendingPathComponent("nameOfFileHere") {
let filePath = pathComponent.path
let fileManager = FileManager.default
if fileManager.fileExists(atPath: filePath) {
print("FILE ...
Calculate a MD5 hash from a string
...System.Text.Encoding.ASCII.GetBytes(input);
byte[] hashBytes = md5.ComputeHash(inputBytes);
// Convert the byte array to hexadecimal string
StringBuilder sb = new StringBuilder();
for (int i = 0; i < hashBytes.Length; i++)
{
sb.Append(hashBytes...
Unable to cast object of type 'System.DBNull' to type 'System.String`
...numeric values, false for boolean, MinValue for DateTime... msdn.microsoft.com/en-us/library/vstudio/…
– Jaime
Oct 7 '14 at 14:30
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How do I add indices to MySQL tables?
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ALTER TABLE `table` ADD INDEX `product_id_index` (`product_id`)
Never compare integer to strings in MySQL. If id is int, remove the quotes.
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How do I change the background color of the ActionBar of an ActionBarActivity using XML?
... The same approach should be used if you are using ActionBarCompat library. The only difference is that you should change actionBarStyle (without android: prefix) item to define how actionbar will look on pre-3.0 Android devices
– Alex Semeniuk
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Best way to build a Plugin system with Java
...nfiguration);
public void run();
public void unload();
public JComponent getConfigurationPage();
}
Plugin authors should then bundle their plugins into JAR files. Your applications opens the JAR file and could then use an attribute from JAR manifest or the list of all files in the JAR...