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What is a NullPointerException, and how do I fix it?
...thod isn't called at all. If the method was called, make sure to check the order that these methods are called, and the set method isn't called after the print method.
This is enough to give us a solution: add a call to printer.setName() before calling printer.print().
Other fixes
The variable ca...
Convert Unicode to ASCII without errors in Python
...tf8' codec can't decode byte 0x8b in position 1: unexpected code byte
In order to decode a gzpipped response you need to add the following modules (in Python 3):
import gzip
import io
Note: In Python 2 you'd use StringIO instead of io
Then you can parse the content out like this:
response = u...
What kinds of patterns could I enforce on the code to make it easier to translate to another program
...
My answer will address the specific task of parsing Python in order to translate it to another language, and not the higher-level aspects which Ira addressed well in his answer.
In short: do not use the parser module, there's an easier way.
The ast module, available since Python 2.6 i...
Python str vs unicode types
...When retrieving the content you should know the encoding that was used, in order to be able to decode the bytes into a unicode object.
– Bakuriu
Aug 3 '13 at 15:54
...
JavaScript variables declare outside or inside loop?
...and the previous 2 are only ~2 seconds. Very repeatably and regardless of order.
So, this proves to me, that one should always declare the vars outside of the loop. Curious case to me is the first one where I declare i in the for() statement. This one appears to be just as fast as the 2nd test w...
Stacked Tabs in Bootstrap 3
...> .nav-tabs,
.tabs-right > .nav-tabs,
.tabs-left > .nav-tabs {
border-bottom: 0;
}
.tab-content > .tab-pane,
.pill-content > .pill-pane {
display: none;
}
.tab-content > .active,
.pill-content > .active {
display: block;
}
.tabs-below > .nav-tabs {
border-top: 1px ...
Approximate cost to access various caches and main memory?
...
@Dave that's true, but this numbers show the order of magnitude
– Andrey
Nov 3 '10 at 13:24
8
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Role-based access control (RBAC) vs. Claims-based access control (CBAC) in ASP.NET MVC
...the original basis of the "night club" metaphor provided by @CodingSoft in order to make this answer understandable without having to read other answers.
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Resolve promises one after another (i.e. in sequence)?
... Promise.resolve(files).map(fs.readFileAsync,{concurrency: 1 });
// if the order matters, you can use Promise.each instead and omit concurrency param
readAll.then(function(allFileContents){
// do stuff to read files.
});
Although there is really no reason not to use async await today.
...
Compiler Ambiguous invocation error - anonymous method and method group with Func or Action
...esolution to take return type into account for method group conversions in order to make the behaviour more intuitive, but I do understand it would do so at the cost of consistency. (The same can be said of generic type inference as applied to method group conversions when there's only one method in...