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psql: could not connect to server: No such file or directory (Mac OS X)
Upon restarting my Mac I got the dreaded Postgres error:
21 Answers
21
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WaitAll vs WhenAll
...enAll(taskArray) the output is as follows.
19/11/2016 12:18:37 AM: Task 1 started
19/11/2016 12:18:37 AM: Task 3 started
19/11/2016 12:18:37 AM: Task 2 started
Caught Exception in Main at 19/11/2016 12:18:40 AM: Task 1 throwing at 19/11/2016 12:18:38 AM
Done.
When the program below is executed wi...
Javascript calculate the day of the year (1 - 366)
...
Following OP's edit:
var now = new Date();
var start = new Date(now.getFullYear(), 0, 0);
var diff = now - start;
var oneDay = 1000 * 60 * 60 * 24;
var day = Math.floor(diff / oneDay);
console.log('Day of year: ' + day);
Edit: The code above will fail when now ...
What does the brk() system call do?
...e-mmap) Unix the data segment was continuous with the heap; before program start, the kernel would load the "text" and "data" blocks into RAM starting at address zero (actually a little above address zero, so that the NULL pointer genuinely didn't point to anything) and set the break address to the ...
How to dismiss notification after action has been clicked
...: Basically, you add the notification tag and id to your intent which gets started when your action is pressed. With that extra information, you can check in the starting activity whether it was started via a notifcation action.
– endowzoner
Dec 19 '12 at 8:43
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Circle drawing with SVG's arc path
...t left off and using the negative diameter to get back to the original arc start point.
The reason it can't be done as a full circle in one arc (and I'm just speculating) is because you would be telling it to draw an arc from itself (let's say 150,150) to itself (150,150), which it renders as "oh, I...
Complete Working Sample of the Gmail Three-Fragment Animation Scenario?
...as "the Gmail three-fragment animation" scenario. Specifically, we want to start with two fragments, like this:
6 Answers
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Greedy vs. Reluctant vs. Possessive Quantifiers
...er tries to match the f following, but the unmatched portion of the string starts with "x" so that doesn't work. So the matcher backtracks, making the non-greedy quantifier match one more character (now it matches the "x", leaving "fooxxxxxxfoo" unmatched). Then it tries to match the f, which succee...
PSQLException: current transaction is aborted, commands ignored until end of transaction block
...sql_insert()
{
try
{
connection.setAutoCommit(false); //start of transaction.
Statement statement = connection.createStatement();
System.out.println("start doing statement.execute");
statement.execute(
"insert into...
Generate list of all possible permutations of a string
...ing individually. (the variable index in the code below keeps track of the start of the last and the next iteration)
Some pseudocode:
list = originalString.split('')
index = (0,0)
list = [""]
for iteration n in 1 to y:
index = (index[1], len(list))
for string s in list.subset(index[0] to end):...