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“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
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how do you filter pandas dataframes by multiple columns
... sub-statements with ():
males = df[(df[Gender]=='Male') & (df[Year]==2014)]
To store your dataframes in a dict using a for loop:
from collections import defaultdict
dic={}
for g in ['male', 'female']:
dic[g]=defaultdict(dict)
for y in [2013, 2014]:
dic[g][y]=df[(df[Gender]==g) &...
What are the nuances of scope prototypal / prototypical inheritance in AngularJS?
...he nuances, scope inheritance is normally straightfoward... until you need 2-way data binding (i.e., form elements, ng-model) in the child scope. Ng-repeat, ng-switch, and ng-include can trip you up if you try to bind to a primitive (e.g., number, string, boolean) in the parent scope from inside th...
Alternatives to gprof [closed]
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Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
answered Dec 19 '09 at 5:26
Norman Ramsey...
iTunes Connect: How to choose a good SKU?
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BiscuitBaker
1,38233 gold badges2222 silver badges3535 bronze badges
answered Jan 3 '12 at 10:38
Dennis StritzkeDennis...
How do I terminate a thread in C++11?
... one is getting the target thread to throw this exception.
Options 1 and 2 don't leak intra-process resources, but they terminate every thread.
Option 3 will probably leak resources, but is partially cooperative in that the target thread has to agree to throw the exception.
There is no portable ...
Simulate delayed and dropped packets on Linux
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327
netem leverages functionality already built into Linux and userspace utilities to simulate netw...
Bash empty array expansion with `set -u`
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The only safe idiom is ${arr[@]+"${arr[@]}"}
This is already the recommendation in ikegami's a...
Reload django object from database
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274
As of Django 1.8 refreshing objects is built in. Link to docs.
def test_update_result(self):
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How to evaluate http response codes from bash/shell script?
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