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Why does the lock object have to be static?
...ity. Sometimes that is static. More often, IMO, it isn't - but is instance based.
The main time you see a static lock is for a global cache, or for deferred loading of global data / singletons. And in the latter, there are better ways of doing it anyway.
So it really depends: how is Locker used in...
Find the min/max element of an Array in JavaScript
...ed website... and testing in Firefox 51.0.0 / Mac OS X 10.12.0, the reduce-based approach is 30% slower than loop-based ... very different results
– Pierpaolo Cira
Feb 21 '17 at 9:37
...
Conventions for exceptions or error codes
...here. The argument against exceptions here takes a hypothetical error-code-based API where all error codes are documented and a hypothetical programmer who reads the documentation, correctly identifies all error cases that are logically possible in her application, and writes code to handle each of ...
How can I preview a merge in git?
...to current branch.
git diff ...otherbranchdiff from common ancestor (merge base) to the head of what will be merged. Note the three dots, which have a special meaning compared to two dots (see below).
gitk ...otherbranchgraphical representation of the branches since they were merged last time.
Emp...
python-pandas and databases like mysql
...
As Wes says, io/sql's read_sql will do it, once you've gotten a database connection using a DBI compatible library. We can look at two short examples using the MySQLdb and cx_Oracle libraries to connect to Oracle and MySQL and query their data dictionaries. Here is the example for cx_Oracle:...
Best practices for using Markers in SLF4J/Logback
...it, but our logging strategy is fairly simple, using straightforward class based loggers and no fancy stuff like MDC or Markers.
...
Regex lookahead, lookbehind and atomic groups
...s. They check for a regex (towards right or left of the current position - based on ahead or behind), succeeds or fails when a match is found (based on if it is positive or negative) and discards the matched portion. They don't consume any character - the matching for regex following them (if any), ...
C# Java HashMap equivalent
... {
return null_value;
}
return base[key];
}
set
{
if (key == null)
{
null_value = value;
}
else
{
base[key] = value;
}
...
UIStatusBarStyle PreferredStatusBarStyle does not work on iOS 7
... my iPhone application built with Xcode 5 for iOS 7 I set UIViewControllerBasedStatusBarAppearance=YES in info.plist , and in my ViewController I have this code:
...
Choosing Mobile Web HTML5 Framework [closed]
... and the coding style appears to be very similar to Sencha Touch, which is based on ExtJS, so if your team already has experience with ExtJS, it might be wise to consider one of these frameworks.
Nimblekit:
This appears to be for iOS only, not a good thing if you ever decide to expand your applicat...