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For-each over an array in JavaScript
...k (not used above). The callback is called for each entry in the array, in order, skipping non-existent entries in sparse arrays. Although I only used one argument above, the callback is called with three: The value of each entry, the index of that entry, and a reference to the array you're iteratin...
Postgresql: password authentication failed for user “postgres”
... Note, that pg_hba.conf must have the postgres user set to ident in order for the first steps to work. If you already set it to md5 or something else, you won't be able to auto-login.
– Cerin
Sep 28 '13 at 23:33
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Difference between Eclipse Europa, Helios, Galileo
...d how the names of the last three and the next release are in alphabetical order (Galileo, Helios, Indigo, Juno)? This is probably how they will go in the future, in the same way that Ubuntu release codenames increase alphabetically (note Indigo is not a moon of Jupiter!).
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...ack memory with 0xCC. It also inserts a space between every stack frame in order to detect buffer overflows. A very simple example of where this is useful is here (in practice Visual Studio would spot this problem and issue a warning):
...
bool error; // uninitialised value
if(something)
{...
Is memcached a dinosaur in comparison to Redis? [closed]
...hout help from the client. Also memcached is faster with big values in the order of 100k. Redis recently improved a lot about big values (unstable branch) but still memcached is faster in this use case. The point here is: nor one or the other will likely going to be your bottleneck for the query-per...
Difference between an API and SDK
...is part of the systems of P. It is a kit for software developers to use in order to modify, configure, fix, improve, etc the software piece of P.
If C wants to offer P's functionality to other companies/systems, it does so with an API.
This is an interface to P. A way for external systems to int...
htaccess redirect to https://www
... Strictly speaking, the two rules you have above are in the wrong order. If a request comes in for http://example.com (ie. HTTP and non-www) then you'll get a double redirect. First to https://example.com (the first rule) and then to https://www.example.com (the second rule). You can fix th...
How should you build your database from source control?
...scripts named liked 001_AlterXXX.sql, so that running them in natural sort order will upgrade from version A to B)
Which types of objects shouldn't be version controlled?
Sequences?
Grants?
User Accounts?
see 2. If your users/roles (or technical user names) are different between environments, yo...
How can I reliably determine the type of a variable that is declared using var at design time?
...art by transforming it syntactically to
var z = y.Where(foo=>foo.
In order to work out the type of foo we must first know the type of y. So at this point we ask the type determiner "what is the type of y"? It then starts up an expression evaluator which parses x.ToCharArray() and asks "what's...
Design Patterns web based applications [closed]
...ly, there are many available, time-tested candidates ( in the alphabetical order ): Apache Wicket, Java Server Faces, Spring to name a few.
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