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initializing a Guava ImmutableMap
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Apart from readability, you can use ImmutableMap.of static factory for up to five key value pairs. Then you have to use builder.
– Xaerxess
Feb 28 '12 at 21:06
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What is the Difference Between read() and recv() , and Between send() and write()?
...owledge about how IP stacks work in kernels and not visible to the caller. From caller perspective, they will still provide equal behavior.
– Mecki
Jul 19 '17 at 16:51
2
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WebDriver: check if an element exists? [duplicate]
...u don't set the timeout driver.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromSeconds(0));
It's actually a very simple and elegant once the method is created. By using FindElementSafe instead of FindElement, I don't "see" the ugly try/catch block and I can use a simple Exists method. That would l...
Java Enum Methods - return opposite direction enum
...umType.ENUM_CONSTANT.methodName(arguments).
Now lets go back to problem from question. One of solutions could be
public enum Direction {
NORTH, SOUTH, EAST, WEST;
private Direction opposite;
static {
NORTH.opposite = SOUTH;
SOUTH.opposite = NORTH;
EAST.opp...
BigDecimal setScale and round
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See: "precision": The digit count starts from the leftmost nonzero digit of the exact result. docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html
– Eddy
Sep 6 '16 at 7:06
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Can I change the name of `nohup.out`?
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@ismail, if I understand, this directs the output away from stdout and nohup.out, into nohup2.out. Then what does 2>&1& do?
– David LeBauer
Dec 28 '10 at 21:25
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How SignalR works internally?
...al to respond. When there is a signal or the request times out, it returns from the server and sends another request and the process continues. (I left some details out about how the client it keeps track of what it saw so it doesn't miss messages)
Hopefully that answers most of your question.
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Get notified when UITableView has finished asking for data?
...ere some way to find out when a UITableView has finished asking for data from its data source?
18 Answers
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Django queries - id vs pk
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It doesn't matter. pk is more independent from the actual primary key field i.e. you don't need to care whether the primary key field is called id or object_id or whatever.
It also provides more consistency if you have models with different primary key fields.
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HTTP authentication logout via PHP
... even one that's consistent across browsers.
This is a problem that comes from the HTTP specification (section 15.6):
Existing HTTP clients and user agents typically retain authentication
information indefinitely. HTTP/1.1. does not provide a method for a
server to direct clients to dis...