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How would you do a “not in” query with LINQ?
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@Echostorm (and others reading), if you do a Select to Anonymous object, the HashCode will be determined by the property values; list1.Select(item => new { Property1 = item.Property1, Property2 = item.Property2 }).Except(list2.Select( item =>...
python design patterns [closed]
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You may also wish to read this article (select the .pdf file), which discusses Design Patterns in dynamic object oriented languages (i.e. Python). To quote the page:
This paper explores how the patterns from the "Gang of Four", or "GOF" book,...
What does the Subversion status symbol “~” mean?
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In case anyone reading this thread has the same problem: this happened to me and the reason for the '~' status was that I had some symbolic links in the repository, which had been overwritten by standard files by a 'sed -i' operation. I rec...
convert a JavaScript string variable to decimal/money
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To quote @PhilipWhitehouse "Please, to anyone reading this in the future, do not use float to store currency. You will loose precision and data. You should store it as a integer number of cents (or pennies etc.) and then convert prior to output.". Source: stackoverflow.c...
Ruby convert Object to Hash
...attribute_names.each_with_object({}) { |name, attrs| attrs[name] = read_attribute(name) } . See here: github.com/rails/rails/blob/master/activerecord/lib/…
– Chris Kimpton
What is the proper way to check for existence of variable in an EJS template (using ExpressJS)?
... typeof users.user_id.name == 'undefined' ) ...
was failing with "Cannot read property 'name' of null"
Then I noticed that I needed to do the checking like this:
if ( typeof users.user_id == 'undefined' ) ...
I needed to check the "container" of 'name', so it worked!
After that, this worked the...
How to convert a char to a String?
...that proves that:
@BenchmarkMode(Mode.Throughput)
@Fork(1)
@State(Scope.Thread)
@Warmup(iterations = 10, time = 1, batchSize = 1000, timeUnit = TimeUnit.SECONDS)
@Measurement(iterations = 10, time = 1, batchSize = 1000, timeUnit = TimeUnit.SECONDS)
public class CharToStringConversion {
private...
How to delete last item in list?
...mments)
Note 2: The code could use some Python idioms. I highly recommend reading this:
Code Like a Pythonista: Idiomatic Python (via wayback machine archive).
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Tomcat startup logs - SEVERE: Error filterStart how to get a stack trace?
...tup) never writes anything to the file, I had to turn on ConsoleHandler to read what went wrong, and that wrote the exceptions in Catalina output file.
– user972946
Aug 12 '13 at 1:30
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How is malloc() implemented internally? [duplicate]
...ta segment. This means it moves a border of an area in which a program may read/write data (letting it grow or shrink, although AFAIK no malloc really gives memory segments back to the kernel with that method). Aside from that, there's also mmap which is used to map files into memory but is also use...