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Are Swift variables atomic?
... from libswift_stdlib_core and, apparently, does not have thread safety built in.
We can speculate that additional keywords (similar to @lazy) might be introduced later on.
Update 07/20/15: according to this blogpost on singletons swift environment can make certain cases thread safe for you, i.e....
What encoding/code page is cmd.exe using?
...characters. So use
a TrueType font like Lucida Console instead of the default Raster Font.
But if the console font doesn’t contain the character you’re trying to display,
you’ll see question marks instead of gibberish. When you get gibberish,
there’s more going on than just font settings.
...
What is the difference between parseInt() and Number()?
...
@TomC You're seeing the result of an edited comment (that's what the pencil icon following the comment denotes); previously there was zero explanation, just strong admonition.
– ken
Oct 18 '17 at 16:57
...
Why is it string.join(list) instead of list.join(string)?
...ause any iterable can be joined (e.g, list, tuple, dict, set), but the result and the "joiner" must be strings.
For example:
'_'.join(['welcome', 'to', 'stack', 'overflow'])
'_'.join(('welcome', 'to', 'stack', 'overflow'))
'welcome_to_stack_overflow'
Using something else than strings will rais...
Printf width specifier to maintain precision of floating-point value
...mal)”.
A simple example would be to print one seventh as in:
#include <float.h>
int Digs = DECIMAL_DIG;
double OneSeventh = 1.0/7.0;
printf("%.*e\n", Digs, OneSeventh);
// 1.428571428571428492127e-01
But let's dig deeper ...
Mathematically, the answer is "0.142857 142857 142857 ...", ...
application/x-www-form-urlencoded or multipart/form-data?
...here are two ways to POST data: application/x-www-form-urlencoded and multipart/form-data . I understand that most browsers are only able to upload files if multipart/form-data is used. Is there any additional guidance when to use one of the encoding types in an API context (no browser involved...
Function to convert column number to letter?
...t(Cells(1, lngCol).Address(True, False), "$")(0)
– Caltor
Feb 18 '15 at 12:21
3
That is quite cor...
Is there a timeout for idle PostgreSQL connections?
... it fails to close pooled connections. You aren't having issues just with <idle> in transaction sessions, but with too many connections overall.
Killing connections is not the right answer for that, but it's an OK-ish temporary workaround.
Rather than re-starting PostgreSQL to boot all other...
What is the correct syntax for 'else if'?
...ntext having a single-token directive is valuable, since parsing #else if <code> vs. #else <code that could theoretically even be an if statement> would've complicated a syntax that was intended to be bog-simple.
– FeRD
May 30 '18 at 19:46
...
How do I force Postgres to use a particular index?
...mount)
FROM transactions
WHERE date >= 'yesterday'::timestamp AND date < 'today'::timestamp AND
description = 'Refund'
GROUP BY client_id
PostgreSQL may choose to use the index transactions_description_idx instead of transactions_date_idx, which may lead to the query taking several min...