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Aren't Python strings immutable? Then why does a + “ ” + b work?
...the variable a to point at a new string "Dog eats treats". You didn't actually mutate the string "Dog". Strings are immutable, variables can point at whatever they want.
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Resque vs Sidekiq? [closed]
...ns out of the box.
Cons
[huge] requires thread-safety of your code and all dependencies. If you run thread-unsafe code with threads, you're asking for trouble;
works on some rubies better than others (jruby is recommended, efficiency on MRI is decreased due to GVL (global VM lock)).
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How do I search for an object by its ObjectId in the mongo console?
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Not strange at all, people do this all the time. Make sure the collection name is correct (case matters) and that the ObjectId is exact.
Documentation is here
> db.test.insert({x: 1})
> db.test.find() ...
printf format specifiers for uint32_t and size_t
...ng size_t to be the same as unsigned long (possibly 64 bits) when it's actually an unsigned int (32 bits). Try using %zu in both cases.
I'm not entirely certain though.
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Attach a file from MemoryStream to a MailMessage in C#
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writer.Disopose() was too early for my solution but all the other is great example.
– Kazimierz Jawor
Aug 4 '15 at 13:10
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Apply function to all elements of collection through LINQ [duplicate]
...ently started off with LINQ and its amazing. I was wondering if LINQ would allow me to apply a function - any function - to all the elements of a collection, without using foreach. Something like python lambda functions.
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jQuery get textarea text
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Normally, it's the value property
testArea.value
Or is there something I'm missing in what you need?
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Accept function as parameter in PHP
... to find some documentation to link to first, and didn't know what it was called exactly. Ah well, now I'll know for when I need to do this as well. Thanks.
– Rob
Apr 23 '10 at 17:01
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What does the brk() system call do?
...d load the "text" and "data" blocks into RAM starting at address zero (actually a little above address zero, so that the NULL pointer genuinely didn't point to anything) and set the break address to the end of the data segment. The first call to malloc would then use sbrk to move the break up and c...
Accessing elements of Python dictionary by index
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How could one do this dynamically without knowing the depth of the elements?
– Ethan Bierlein
May 10 '15 at 2:57
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