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Java heap terminology: young, old and permanent generations?
...ce for class definitions and related data. In Java 6 and earlier, interned strings were also stored in the permanent generation. In Java 7, interned strings are stored in the main object heap.
Here is a good post on permanent generation.
I like the descriptions given for each space in Oracle's gui...
Mocking vs. Spying in mocking frameworks
...er.class)
public class MockSpyExampleTest {
@Mock
private List<String> mockList;
@Spy
private List<String> spyList = new ArrayList();
@Test
public void testMockList() {
//by default, calling the methods of mock object will do nothing
mockList.ad...
How do I remove an array item in TypeScript?
...nts is an array. You want to remove an item from this array.
departments: string[] = [];
removeDepartment(name: string): void {
this.departments = this.departments.filter(item => item != name);
}
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...
Inserting code in this LaTeX document with indentation
...\lstset{frame=tb,
language=Java,
aboveskip=3mm,
belowskip=3mm,
showstringspaces=false,
columns=flexible,
basicstyle={\small\ttfamily},
numbers=none,
numberstyle=\tiny\color{gray},
keywordstyle=\color{blue},
commentstyle=\color{dkgreen},
stringstyle=\color{mauve},
breaklines=t...
Getting new Twitter API consumer and secret keys
...term "API key" usually refers to what's called an OAuth consumer key. This string identifies your application when making requests to the API. In OAuth 1.0a, your "API keys" probably refer to the combination of this consumer key and the "consumer secret," a string that is used to securely "sign" you...
How to dynamically compose an OR query filter in Django?
... with a list
# of db fields that can change like the following
# list_with_strings = ['dbfield1', 'dbfield2', 'dbfield3']
# init our q objects variable to use .add() on it
q_objects = Q(id__in=[])
# loop trough the list and create an OR condition for each item
for item in list:
q_objects.add(Q...
How does git compute file hashes?
... $(printf "\0$s" | wc -c). Note the added empty character. That is, if the string is 'abc' with the added empty character in front the length would yield 4, not 3. Then the results with sha1sum matches git hash-object.
– Michael Ekoka
Apr 11 '17 at 10:24
...
Configuring Log4j Loggers Programmatically
...le = new ConsoleAppender(); //create appender
//configure the appender
String PATTERN = "%d [%p|%c|%C{1}] %m%n";
console.setLayout(new PatternLayout(PATTERN));
console.setThreshold(Level.FATAL);
console.activateOptions();
//add appender to any Logger (here is root)
Logger.getRootLogge...
Is a Python list guaranteed to have its elements stay in the order they are inserted in?
...ng FIFO). Lists are practical representations of, well, lists of things. A string can be thought of as a list of characters, as the order is important ("abc" != "bca") and duplicates in the content of the string are certainly permitted ("aaa" can exist and != "a").
A set is a collection of elements...
What is the difference between bindParam and bindValue?
...le. The main reason for using bindValue would be static data, e.g. literal strings or numbers.
– lonesomeday
Jul 17 '13 at 20:53
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