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Useful code which uses reduce()? [closed]
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The other uses I've found for it besides + and * were with and and or, but now we have any and all to replace those cases.
foldl and foldr do come up in Scheme a lot...
Here's some cute usages:
Flatten a list
Goal: turn [[1, 2, 3], [4, 5], [6, 7,...
What's a good way to overwrite DateTime.Now during testing?
I've got some (C#) code that relies on today's date to correctly calculate things in the future. If I use today's date in the testing, I have to repeat the calculation in the test, which doesn't feel right. What's the best way to set the date to a known value within the test so that I can test that ...
What's the difference between ViewData and ViewBag?
...feature. It achieves the same goal as viewdata and should be avoided in favor of using strongly typed view models (the same way as viewdata should be avoided).
So basically it replaces magic strings:
ViewData["Foo"]
with magic properties:
ViewBag.Foo
for which you have no compile time safety....
Break when a value changes using the Visual Studio debugger
...dited Apr 8 '16 at 14:57
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
answered Oct 1 '08 at 22:36
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How to remove all null elements from a ArrayList or String Array?
...singleton(null));
Read the Java API. The code will throw java.lang.UnsupportedOperationException for immutable lists (such as created with Arrays.asList); see this answer for more details.
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Add number of days to a date
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strtotime
expects to be given a string containing a US English date format and will try to parse that format into a Unix timestamp (the number of seconds since January 1 1970 00:00:00 UTC), relative to the timestamp given in now, or the current time if now is not supplied.
while date
Re...
What is difference between Errors and Exceptions? [duplicate]
How can I differentiate between Errors and Exceptions in Java?
4 Answers
4
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Most efficient way to concatenate strings?
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The StringBuilder.Append() method is much better than using the + operator. But I've found that, when executing 1000 concatenations or less, String.Join() is even more efficient than StringBuilder.
StringBuilder sb = new StringBuilder();
sb.Append(someString);
The only problem with String.Joi...
What to put in a python module docstring? [closed]
...I've read both PEP 8 and PEP 257 , and I've written lots of docstrings for functions and classes, but I'm a little unsure about what should go in a module docstring. I figured, at a minimum, it should document the functions and classes that the module exports, but I've also seen a few modules th...
How to tell git to ignore individual lines, i.e. gitignore for specific lines of code [duplicate]
.gitignore can ignore whole files, but is there a way to ignore specific lines of code while coding?
2 Answers
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