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How to get my IP address programmatically on iOS/macOS?
...un0"
#define IP_ADDR_IPv4 @"ipv4"
#define IP_ADDR_IPv6 @"ipv6"
- (NSString *)getIPAddress:(BOOL)preferIPv4
{
NSArray *searchArray = preferIPv4 ?
@[ /*IOS_VPN @"/" IP_ADDR_IPv4, IOS_VPN @"/" IP_ADDR_IPv6,*/ IOS_WIFI @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6,...
Is there a JSON equivalent of XQuery/XPath?
...orting, mapping, range
selection, and flexible expressions with wildcard string comparisons
and various operators.
JSONselect has another point of view on the question (CSS selector-like, rather than XPath) and has a JavaScript implementation.
...
How to convert a number to string and vice versa in C++
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Update for C++11
As of the C++11 standard, string-to-number conversion and vice-versa are built in into the standard library. All the following functions are present in <string> (as per paragraph 21.5).
string to numeric
float stof(const string&am...
How can I launch Safari from an iPhone app?
...
should be the following :
NSURL *url = [NSURL URLWithString:@"http://www.stackoverflow.com"];
if (![[UIApplication sharedApplication] openURL:url]) {
NSLog(@"%@%@",@"Failed to open url:",[url description]);
}
...
How do I select an element in jQuery by using a variable for the ID?
...with a "#"
You are attempting to pass a Number to the find function when a String is required (passing "#" + 5 would fix this as it would convert the 5 to a "5" first)
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What is a “symbol” in Julia?
... read those answers, it seems that the reason a symbol is different than a string is that strings are mutable while symbols are immutable, and symbols are also "interned" – whatever that means. Strings do happen to be mutable in Ruby and Lisp, but they aren't in Julia, and that difference is actu...
Restoring Nuget References?
...&paste it into your Package Manager Console
function Sync-References([string]$PackageId) {
get-project -all | %{
$proj = $_ ;
Write-Host $proj.name;
get-package -project $proj.name | ? { $_.id -match $PackageId } | % {
Write-Host $_.id;
uninstall-package -projectnam...
package R does not exist
...a code auto-generated from your XML files (UI layout, internationalization strings, etc.) If the code used to be working before (as it seems it is), you need to tell your IDE to regenerate these files somehow:
in IntelliJ, select Tools > Android > Generate sources for <project>
(If you...
What is the equivalent of “!=” in Excel VBA?
...
Just a note. If you want to compare a string with "" ,in your case, use
If LEN(str) > 0 Then
or even just
If LEN(str) Then
instead.
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How to export all data from table to an insertable sql format?
...ot be able to run the script in SQL Server Management Studio (unterminated string error). The only way around this seems to be manually changing everything to N'' or to write your own replace utility to filter out the zeros (no text editor will handle it because zero just means end of the string).
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