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Decode Base64 data in Java
... there is an officially supported API for Base64 encoding and decoding.
In time this will probably become the default choice.
The API includes the class java.util.Base64 and its nested classes. It supports three different flavors: basic, URL safe, and MIME.
Sample code using the "basic" encoding:
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Set value for particular cell in pandas DataFrame using index
...ataframe, so
df['x']['C'] = 10
modifies df itself.
Warning: It is sometimes difficult to predict if an operation returns a copy or a view. For this reason the docs recommend avoiding assignments with "chained indexing".
So the recommended alternative is
df.at['C', 'x'] = 10
which does m...
How to concatenate stdin and a string?
...y useful in cases you are performing calls to functions which takes a long time to complete and want to be continuously updated about the output of the function.
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Colors with unix command “watch”?
... flags or there isn't you can make a poor's man watch by:
while sleep <time>; do clear; <command>; done
It will have a bit of flicker (watch works "double buffered") but for some stuff it is useful enough.
You may be tempted to make a double buffered poor man's watch using
while sl...
Creating an abstract class in Objective-C
...as abstract, just don't use it without subclassing it. There is no compile-time enforcement that prevents instantiation of an abstract class, however. In fact, there is nothing to stop a user from providing implementations of abstract methods via a category (i.e. at runtime). You can force a user to...
How can I get dict from sqlite query?
...vely support the dictionary API as well). But use the Row object all other times.
def dict_from_row(row):
return dict(zip(row.keys(), row))
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How to compare binary files to check if they are the same?
...ntu Linux) to know if two binary files are the same or not (except for the time stamps)? I do not need to actually extract the difference. I just need to know whether they are the same or not.
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Passing arguments to C# generic new() of templated type
...r me is consolidating the logic of T creation in one place rather than sometimes creating T inside and sometimes outside of the method.
– Carl G
May 13 '12 at 23:18
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Xcode duplicate line
...2.1
Instruction
Give permissions to edit the following files. Most of the time OS will not allow you to edit the files.
for 11.3.1 version
sudo chmod 666 /Applications/Xcode.app/Contents/Frameworks/IDEKit.framework/Versions/A/Resources//IDETextKeyBindingSet.plist
sudo chmod 777 /Applications/Xcod...
List of lists into numpy array
...y for a while, and found this behavior non-trivial. Thanks for taking the time to explain this more general case.
– Adam Hughes
Oct 29 '14 at 0:07
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