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PostgreSQL: Difference between text and varchar (character varying)
...er was saying "under the hood it's all varlena", which is certainly useful information that distinguishes this answer from a link-only answer.
– Bruno
Jul 22 '14 at 18:30
26
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Why unsigned integer is not available in PostgreSQL?
...So I go use the complex example from here and make it simple:
PG_FUNCTION_INFO_V1(complex_in);
Datum complex_in(PG_FUNCTION_ARGS) {
char *str = PG_GETARG_CSTRING(0);
uint64_t result;
if(sscanf(str, "%llx" , &result) != 1)
ereport(ERROR,
(errcode(ERR...
How do emulators work and how are they written? [closed]
... instruction from memory. Your code parses this instruction and uses this information to alter processor state as specified by your processor. The core problem with interpretation is that it's very slow; each time you handle a given instruction, you have to decode it and perform the requisite oper...
Is key-value observation (KVO) available in Swift?
...
(Edited to add new info): consider whether using the Combine framework can help you accomplish what you wanted, rather than using KVO
Yes and no. KVO works on NSObject subclasses much as it always has. It does not work for classes that don't s...
How to find out client ID of component for ajax update/render? Cannot find component with expression
...ith the binding and faces-config and other...) this suppose to solve your "INFO: Cannot find compone..."
– Daniel
Dec 26 '11 at 18:33
...
Comparison of Android networking libraries: OkHTTP, Retrofit, and Volley [closed]
...s (milliseconds, lower value is better):
(FYI above Retrofit Benchmarks info will improve with java NIO support because the new version of OKhttp is dependent on NIO Okio library)
In all three tests with varying repeats (1 – 25 times), Volley was
anywhere from 50% to 75% faster. Retrof...
SHA1 vs md5 vs SHA256: which to use for a PHP login?
...
This is really misinformed. Of course securely hashing passwords in the database doesn't improve security at an application level or database level. It's not a catch all for security. You want to securely hash user password in your database fo...
When to use CouchDB over MongoDB and vice versa
...
Good info for the time, but this is really old... lots has changed (including REST interfaces for Mongo).
– rICh
Oct 12 '14 at 23:24
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Windows batch files: .bat vs .cmd?
...
Here is a compilation of verified information from the various answers and cited references in this thread:
command.com is the 16-bit command processor introduced in MS-DOS and was also used in the Win9x series of operating systems.
cmd.exe is the 32-bit co...
How to use knockout.js with ASP.NET MVC ViewModels?
...gt;
Why was document ready needed to make it work(see first edit for more information)
I do not understand yet why you need to use the ready event to serialize the model, but it seems that it is simply required (Not to worry about it though)
How do I do something like this if I am using the knockou...