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sed: print only matching group
... option otherwise I was getting invalid reference \1 on s' command's RHS ` error.
– Daniel Sokolowski
Aug 11 '14 at 16:11
15
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Benefits of header-only libraries
...mpiler or a different version of the same compiler then you may get linker errors or strange runtime behaviour due to binary incompatibility.
For example compiler vendors often change their implementation of the STL between versions. If you have a function in a library that accepts a std::vector th...
What does 'synchronized' mean?
...e
strategy for preventing thread
interference and memory consistency
errors: if an object is visible to
more than one thread, all reads or
writes to that object's variables are
done through synchronized methods.
In a very, very small nutshell: When you have two threads that are reading...
How do you specify that a class property is an integer?
... = guard((a, b) => a + b as integer, myCoolInteger, 10)
you'll get an error like below
Argument of type '10' is not assignable to parameter of type 'integer'.
Type '10' is not assignable to type '{ readonly [TAG]: unique symbol; }'.(2345)
Note that you aren't enforcing the return type here...
Google Maps Android API v2 Authorization failure
... (?) was updated while I was reading Stackoverflow with the authentication error message on log. The app was running with while screen, after a few minutes the map was loaded and no more auth errors. I guess a reinstall would also have done it.
– John
Nov 25 '1...
Non-static variable cannot be referenced from a static context
...the class is caught by the Java compiler at compile time and flagged as an error.
import java.io.*;
class HelloWorld {
int myInt; // this is a class variable that is unique to each object
static int myInt2; // this is a class variable shared by all objects of this class
static v...
Find the min/max element of an Array in JavaScript
...rrays (~10⁷ elements), Math.min and Math.max both produces the following error in Node.js.
RangeError: Maximum call stack size exceeded
A more robust solution is to not add every element to the call stack, but to instead pass an array:
function arrayMin(arr) {
return arr.reduce(function ...
How to re-sync the Mysql DB if Master and slave have different database incase of Mysql replication?
...you should rely instead on the --master-data option to guard against human error and release the locks on the master as quickly as possible.
Assume the master is 192.168.100.50 and the slave is 192.168.100.51, each server has a distinct server-id configured, the master has binary logging on and the...
Completely cancel a rebase
...ase --abort did not work, because I messed something. I only got following error: error: could not read '.git/rebase-apply/head-name': directory of file does not exist. The git rebase --quit described bellow solved my problem.
– Kout
Feb 6 at 9:18
...
What is the difference between async.waterfall and async.series
...ction to the next, then when done will call the main callback, passing its error, if an error happens.
The difference is that async.series(), once the series have finished, will pass all the results to the main callback. async.waterfall() will pass to the main callback only the result of the last f...