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Unable to verify leaf signature
...d between the client and the server.
This also worked
process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = '0';
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MongoDB, remove object from array
...
try..
db.mycollection.update(
{'_id': ObjectId("5150a1199fac0e6910000002")},
{ $pull: { "items" : { id: 23 } } },
false,
true
);
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How to tell if JRE or JDK is installed
...java in system environment).
And if you haven't, add it via
export JAVA_HOME=/path/to/java/jdk1.x
and if you unsure if you have java at all on your system just use find in terminal
i.e. find / -name "java"
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Python Process Pool non-daemonic?
...
The multiprocessing.pool.Pool class creates the worker processes in its __init__ method, makes them daemonic and starts them, and it is not possible to re-set their daemon attribute to False before they are started (and afterwards it's not allowed anymore). But you can create your own sub-class o...
Position of least significant bit that is set
... 7, 26, 12, 18, 6, 11, 5, 10, 9
};
r = MultiplyDeBruijnBitPosition[((uint32_t)((v & -v) * 0x077CB531U)) >> 27];
Helpful references:
"Using de Bruijn Sequences to Index a 1 in a Computer Word" - Explanation about why the above code works.
"Board Representation > Bitboards > BitSca...
How to make good reproducible pandas examples
...4, 6]], columns=['A', 'B'])
or make it "copy and pasteable" using pd.read_clipboard(sep='\s\s+'), you can format the text for Stack Overflow highlight and use Ctrl+K (or prepend four spaces to each line), or place three tildes above and below your code with your code unindented:
In [2]: df
Out[2]...
How does the C# compiler detect COM types?
...
[CoClass(typeof(SpVoiceClass))]
public interface SpVoice : ISpeechVoice, _ISpeechVoiceEvents_Event { }
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Passing parameters to addTarget:action:forControlEvents
... creating several buttons within a for loop:
for (NSInteger i = 0; i < _phoneNumbers.count; i++) {
UIButton *phoneButton = [[UIButton alloc] initWithFrame:someFrame];
[phoneButton setTitle:_phoneNumbers[i] forState:UIControlStateNormal];
[phoneButton setTag:i];
[phoneButton ad...
How do I bind a WPF DataGrid to a variable number of columns?
...c readonly Dictionary<DataGrid, NotifyCollectionChangedEventHandler> _handlers;
static DataGridColumnsBehavior()
{
_handlers = new Dictionary<DataGrid, NotifyCollectionChangedEventHandler>();
}
private static void BindableColumnsPropertyChanged(DependencyObject ...
Private properties in JavaScript ES6 classes
...l super(). Yet babel puts them before super.
– seeker_of_bacon
Oct 3 '18 at 16:23
6
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