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How to access object attribute given string corresponding to name of that attribute
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There are built-in functions called getattr and setattr
getattr(object, attrname)
setattr(object, attrname, value)
In this case
x = getattr(t, 'attr1')
setattr(t, 'attr1', 21)
share
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How to access a preexisting collection with Mongoose?
... change the collection name at runtime? I have 5 collections of UserSchema and I want to give each one a different name Eg: users_server1, users_server2, users_server3...
– Ragnar
Jun 6 '14 at 20:41
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How to convert an ArrayList containing Integers to primitive int array?
...ze the fact the ArrayList implements Iterable (via Collection inheritance) and do: for(int n : integer) { ret[counter++] = n; } ... and initialize int counter = 0;
– gardarh
Feb 14 '14 at 15:04
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What exactly is a reentrant function?
...rant?
No.
For example, let's have a C++ function that takes both a lock, and a callback as a parameter:
#include <mutex>
typedef void (*callback)();
std::mutex m;
void foo(callback f)
{
m.lock();
// use the resource protected by the mutex
if (f) {
f();
}
// u...
How do I save a stream to a file in C#?
... If this input stream is got from http connection then will it buffer and download and then write all the bytes from the source?????
– dbw
Jan 4 '14 at 14:16
2
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How to replace a set of tokens in a Java String?
...efficient way would be using a matcher to continually find the expressions and replace them, then append the text to a string builder:
Pattern pattern = Pattern.compile("\\[(.+?)\\]");
Matcher matcher = pattern.matcher(text);
HashMap<String,String> replacements = new HashMap<String,String&...
Check status of one port on remote host [closed]
I need a command line that can check the port status on a remote host. I tried ping xxx.xxx.xxx.xxx:161 but it doesn't recognize the "host". I thought it was a "good" answer until I did the same command against a host I know has that port open. This is for a batch file on Windows that will chec...
JavaScript seconds to time string with format hh:mm:ss
... call it on them too. I also found this answer that would remove the hours and minutes if they were not needed.
– alunsford3
May 25 '12 at 5:44
21
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How can I increment a date by one day in Java?
...Docs would clarify that this would increment larger fields (like the month and year). Calendar.roll "Adds or subtracts (up/down) a single unit of time on the given time field without changing larger fields" .. Again, "larger fields" is vague but that seems consistent with Sam's comment. I wish t...
Sorting related items in a Django template
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@Mark Indeed it does. As far as I understand @property is overkill here as there's no getters or setters involved: stackoverflow.com/questions/1554546/…
– Rick Westera
Jan 22 '14 at 21:46
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