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What does -XX:MaxPermSize do?
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+50
The permanent space is where the classes, methods, internalized strings, and similar objects used by the VM are stored and never deall...
Altering a column: null to not null
...is undesirable for several reasons, so I am looking to update all nulls to 0 and then set these columns to NOT NULL . Aside from changing nulls to 0 , data must be preserved.
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Convert datetime object to a String of date only in Python
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508
You can use strftime to help you format your date.
E.g.,
import datetime
t = datetime.datetim...
How is Generic Covariance & Contra-variance Implemented in C# 4.0?
I didn't attend PDC 2008, but I heard some news that C# 4.0 is announced to support Generic covariance and contra-variance. That is, List<string> can be assigned to List<object> . How could that be?
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How can I use mySQL replace() to replace strings in multiple records?
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answered Nov 24 '10 at 20:28
Raj MoreRaj More
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How can I do SELECT UNIQUE with LINQ?
... Neuron
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answered Aug 19 '10 at 11:11
James CurranJames Curran
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What is a “Bitmap heap scan” in a query plan?
... de BernardyDenis de Bernardy
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Why does [5,6,8,7][1,2] = 8 in JavaScript?
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gsamaras
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answered Sep 14 '11 at 18:17
Lightness Races in OrbitLightness...
SQL set values of one column equal to values of another column in the same table
...carusIcarus
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How to randomly sort (scramble) an array in Ruby?
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answered Nov 29 '09 at 18:49
Ron GejmanRon Gejman
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