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Cocoa Core Data efficient way to count entities
...xt *moc
NSFetchRequest *request = [[NSFetchRequest alloc] init];
[request setEntity:[NSEntityDescription entityForName:entityName inManagedObjectContext:moc]];
[request setIncludesSubentities:NO]; //Omit subentities. Default is YES (i.e. include subentities)
NSError *err;
NSUInteger count = [moc ...
Constructing pandas DataFrame from values in variables gives “ValueError: If using all scalar values
...in hand:
df = pd.DataFrame.from_records([{ 'A':a,'B':b }])
You can also set index, if you want, by:
df = pd.DataFrame.from_records([{ 'A':a,'B':b }], index='A')
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Class JavaLaunchHelper is implemented in both … libinstrument.dylib. One of the two will be used. Wh
...ng Eclipse, not IntelliJ. So you're giving them instructions for modifying settings in the wrong editor (hence it not being marked as correct).
– Allison
Mar 19 '18 at 16:41
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How do I run Asynchronous callbacks in Playground
... to wait for asynchronous work is to import the XCPlayground framework and set XCPlaygroundPage.currentPage.needsIndefiniteExecution = true. If this property has been set, when your top level playground source finishes, instead of stopping the playground there we will continue to spin the main run l...
GitHub: Permission denied (publickey). fatal: The remote end hung up unexpectedly
... refused the connection.)
This solution requires a SSH key already to be set up: https://help.github.com/articles/generating-ssh-keys
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Pros and Cons of Interface constants [closed]
...sy as inserting a new row. Another option would be to build an ENUM class set (where you have one class for each permission role). Then you can extend classes where necessary to provide the appropriate permissions. But there are other methods that will work too
– ircmaxell
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Generate random 5 characters string
...sions since it's incremental):
function incrementalHash($len = 5){
$charset = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
$base = strlen($charset);
$result = '';
$now = explode(' ', microtime())[1];
while ($now >= $base){
$i = $now % $base;
$result = $cha...
NSPredicate: filtering objects by day of NSDate property
...chRequest *request = [[[NSFetchRequest alloc] init] autorelease];
[request setEntity:[NSEntityDescription entityForName:@"EntityName" inManagedObjectContext:moc]];
[request setPredicate:predicate];
NSError *error = nil;
NSArray *results = [moc executeFetchRequest:request error:&error];
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If statement in aspx page
...n my site to display either item 1 or item 2 depending on if a variable is set to true.
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Difference between java.io.PrintWriter and java.io.BufferedWriter?
Please look through code below:
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