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How to properly import a selfsigned certificate into Java keystore that is available to all Java app
...ocated at /usr/lib/jvm/java-openjdk/jre/lib/security/cacerts which I found by running ps -ef | grep java which told me my java was running from openjdk located at /usr/lib/jvm/java-openjdk/bin/java. Also, if this if for a webapp remember to restart. Thanks for the help!!
– Co...
Which access modifiers are implied when not specified?
...In lower-level languages like C or C++, you can get at private fields just by moving pointers around. Short of the safeguards at the OS-level, like DEP and encrypted memory, access modifiers are just compiler-provided assistance to help you write better code. ...Right?
– pbar...
Entity Framework DateTime and UTC
...; Sets the DateTime.Kind value on DateTime and DateTime? members retrieved by Entity Framework. Sets Kind to DateTimeKind.Utc by default. </summary>
[AttributeUsage(AttributeTargets.Property)]
public class DateTimeKindAttribute : Attribute
{
/// <summary> The DateTime.Kind value to s...
How to use string.replace() in python 3.x
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The replace() method in python 3 is used simply by:
a = "This is the island of istanbul"
print (a.replace("is" , "was" , 3))
#3 is the maximum replacement that can be done in the string#
>>> Thwas was the wasland of istanbul
# Last substring 'is' in istanbul i...
virtualenvwrapper and Python 3
... Didn't quite work for me on OSX with 2.7.8 and 3.4.1 installed side-by-side via brew. Modifying it to "mkvirtualenv --python=`which python3` nameOfEnvironment" worked perfectly, though.
– Chris Doggett
Aug 13 '14 at 14:43
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String concatenation in Ruby
I am looking for a more elegant way of concatenating strings in Ruby.
16 Answers
16
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When to use Amazon Cloudfront or S3
... for high performance delivery of your content. (Amazon)
The data served by CloudFront may or may not come from S3. Since it is more optimized for delivery speed, the bandwidth costs a little more.
If your user base is localized, you won't see too much difference working with S3 or CloudFront (bu...
What is the Oracle equivalent of SQL Server's IsNull() function?
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+1: COALESCE is ANSI, supported by Postgres, MySQL... The only caveat is that it doesn't necessarily perform as fast as native syntax.
– OMG Ponies
Aug 19 '10 at 17:33
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How many characters can UTF-8 encode?
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UTF-8 does not use one byte all the time, it's 1 to 4 bytes.
The first 128 characters (US-ASCII) need one byte.
The next 1,920 characters need two bytes to encode. This covers the remainder of almost all Latin alphabets, and also Greek, Cy...
Explaining Python's '__enter__' and '__exit__'
...se with statement automatically closes myfile.txt . You can even check it by calling print(fp.closed) attribute -- which returns True.
This is because the file objects (fp in my example) returned by open function has two built-in methods __enter__ and __exit__. It is also known as context manager...