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Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
...he only interesting part is how the HashMap reference is published.
For em>x m>ample, imagine you publish the map like this:
class SomeClass {
public static HashMap<Object, Object> MAP;
public synchronized static setMap(HashMap<Object, Object> m) {
MAP = m;
}
}
... and at ...
Creating an empty Pandas DataFrame, then filling it?
...
Here's a couple of suggestions:
Use date_range for the indem>x m>:
import datetime
import pandas as pd
import numpy as np
todays_date = datetime.datetime.now().date()
indem>x m> = pd.date_range(todays_date-datetime.timedelta(10), periods=10, freq='D')
columns = ['A','B', 'C']
Note: we cou...
How to use NSURLConnection to connect with SSL for an untrusted cert?
... its message to challenge.sender (much) later, after presenting a dialog bom>x m> to the user if necessary, etc.
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Does Python support short-circuiting?
Does Python support short-circuiting in boolean em>x m>pressions?
3 Answers
3
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Aggregate / summarize multiple variables per group (e.g. sum, mean)
From a data frame, is there a easy way to aggregate ( sum , mean , mam>x m> et c) multiple variables simultaneously?
8 Answer...
String, StringBuffer, and StringBuilder
...ng class because a String object is immutable.
If your string can change (em>x m>ample: lots of logic and operations in the construction of the string) and will only be accessed from a single thread, using a StringBuilder is good enough.
If your string can change, and will be accessed from multiple threa...
What tools are there for functional programming in C?
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You can use GCC's nested functions to simulate lambda em>x m>pressions, in fact, I have a macro to do it for me:
#define lambda(return_type, function_body) \
({ \
return_type anon_func_name_ function_body \
anon_func_name_; \
})
Use like this:
int (*mam>x m>)(int, int) = la...
Ng-model does not update controller value
...
Controller as version (recommended)
Here the template
<div ng-app="em>x m>ample" ng-controller="myController as $ctrl">
<input type="tem>x m>t" ng-model="$ctrl.searchTem>x m>t" />
<button ng-click="$ctrl.check()">Check!</button>
{{ $ctrl.searchTem>x m>t }}
</div>
The JS
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How do I POST JSON data with cURL?
...e. However, I want to test it with cURL. I am trying to post a JSON data. Em>x m>ample data is like this:
24 Answers
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How do I loop through a date range?
... you could hit every other day, every third day, only weekdays, etc. For em>x m>ample, to return every third day starting with the "start" date, you could just call AddDays(3) in the loop instead of AddDays(1).
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