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How to tell Jackson to ignore a field during serialization if its value is null?
...r to How to prevent null values inside a Map and null fields inside a bean from getting serialized through Jackson.
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Named Branches vs Multiple Repositories
...nes there will be no permanent record of where a particular changeset came from.
This means that clones are great for quick experiments where you don't want to record a branch name, and named branches are good for long term branches ("1.x", "2.x" and similar).
Note also that a single repository ca...
javascript toISOString() ignores timezone offset [duplicate]
... that bad to have moment.js in a js project, knowing how much the Date API from ECMAScript lacks of functionalities.
– Léon Pelletier
Sep 23 at 20:52
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What are the differences between git remote prune, git prune, git fetch --prune, etc
...situation is this... someone working on the same repo has deleted a branch from his local & remote repo...
4 Answers
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Python (and Python C API): __new__ versus __init__
...init__ reinitialises the object
[3, 4]
As to why they're separate (aside from simple historical reasons): __new__ methods require a bunch of boilerplate to get right (the initial object creation, and then remembering to return the object at the end). __init__ methods, by contrast, are dead simple,...
How to calculate the time interval between two time strings
...fically, the strptime function, which parses a string into a time object.
from datetime import datetime
s1 = '10:33:26'
s2 = '11:15:49' # for example
FMT = '%H:%M:%S'
tdelta = datetime.strptime(s2, FMT) - datetime.strptime(s1, FMT)
That gets you a timedelta object that contains the difference bet...
In what cases do I use malloc and/or new?
...typesafe in any meaningful way. In C++ you are required to cast the return from void*. This potentially introduces a lot of problems:
#include <stdlib.h>
struct foo {
double d[5];
};
int main() {
foo *f1 = malloc(1); // error, no cast
foo *f2 = static_cast<foo*>(malloc(sizeof(f...
PostgreSQL: Which Datatype should be used for Currency?
...it doesn't.
For a more official source, read this thread in pgsql-general (from just this week!), with statements from core developers including D'Arcy J.M. Cain (original author of the money type) and Tom Lane:
Related answer (and comments!) about improvements in recent releases:
Jasper Report: un...
How can I run PowerShell with the .NET 4 runtime?
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I figured out my problem from above. You have to put the config file in the 64-bit directory when running on a 64-bit OS. The 32-bit powershell executable seems to pick up the change just fine from there.
– Chris McKenzie
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What is an example of the simplest possible Socket.io example?
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// Respond with a message including this clients' id sent from the server
socket.emit('i am client', {data: 'foo!', id: data.id});
});
socket.on('time', function(data) {
addMessage(data.time);
});
socket...