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How can I get last characters of a string
...tring method .substr() combined with the .length property.
var id = "ctl03_Tabs1";
var lastFive = id.substr(id.length - 5); // => "Tabs1"
var lastChar = id.substr(id.length - 1); // => "1"
This gets the characters starting at id.length - 5 and, since the second argument for .substr() is omi...
Why does volatile exist?
...one. Essentially we did this:
void waitForSemaphore()
{
volatile uint16_t* semPtr = WELL_KNOWN_SEM_ADDR;/*well known address to my semaphore*/
while ((*semPtr) != IS_OK_FOR_ME_TO_PROCEED);
}
Without volatile, the optimizer sees the loop as useless (The guy never sets the value! He's nuts, g...
How do you specify that a class property is an integer?
...// Helper for generating Opaque types.
type Opaque<T, K> = T & { __opaque__: K };
// 2 opaque types created with the helper
type Int = Opaque<number, 'Int'>;
type ID = Opaque<number, 'ID'>;
// using our types to differentiate our properties even at runtime
// they are still j...
Database sharding vs partitioning
...ty reasons, as for load balancing.
https://en.wikipedia.org/wiki/Partition_(database)
Sharding is a type of partitioning, such as Horizontal Partitioning (HP)
There is also Vertical Partitioning (VP) whereby you split a table into smaller distinct parts. Normalization also involves this splitting...
UITextView style is being reset after setting text property
I have UITextView *_masterText and after call method setText property font is being reset.
It's happening after I change sdk 7.
_masterText is IBOutlet , global and properties are set in storyboard. It's only me or this is general SDK bug?
...
Spring Cache @Cacheable - not working while calling from another method of the same bean
...e the AspectJ solution.
@Service
@Scope(proxyMode = ScopedProxyMode.TARGET_CLASS)
class AService {
private final AService _aService;
@Autowired
public AService(AService aService) {
_aService = aService;
}
@Cacheable("employeeData")
public List<EmployeeData> ...
How to deal with INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES without uninstall?
... How could one give the debug package a different name? (e.g. {PRODUCT_NAME} Dev)
– sandstrom
Sep 22 '11 at 10:46
6
...
How do you use the “WITH” clause in MySQL?
...in any way:
SELECT *
FROM ARTICLE t
JOIN USERINFO ui ON ui.user_userid = t.article_ownerid
JOIN CATEGORY c ON c.catid = t.article_categoryid
WHERE t.published_ind = 0
ORDER BY t.article_date DESC
LIMIT 1, 3
Here's a better example:
SELECT t.name,
t.num
FROM TABLE ...
Convert seconds to Hour:Minute:Second
...
here you go
function format_time($t,$f=':') // t = seconds, f = separator
{
return sprintf("%02d%s%02d%s%02d", floor($t/3600), $f, ($t/60)%60, $f, $t%60);
}
echo format_time(685); // 00:11:25
...
Configure Microsoft.AspNet.Identity to allow email address as username
...
The C# version of this (in App_Code\IdentityModels.cs) is
public UserManager()
: base(new UserStore<ApplicationUser>(new ApplicationDbContext()))
{
UserValidator = new UserValidator<ApplicationUser>(this) { AllowOnlyAlphan...