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“Undefined reference to” template class constructor [duplicate]
...ur choice will depend on context. The common answer is to put all the implem>me m>ntation in the header file, but there's another approach will will be suitable in som>me m> cases. The choice is yours.
The code in a template is m>me m>rely a 'pattern' known to the compiler. The compiler won't compile the construc...
Gson: How to exclude specific fields from Serialization without annotations
...t it does to a few that I have used, including gson).
If you don't want nam>me m> to show up in the serialized json give it a transient keyword, eg:
private transient String nam>me m>;
More details in the Gson docum>me m>ntation
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Refresh image with a new one at the sam>me m> url
I am accessing a link on my site that will provide a new image each tim>me m> it is accessed.
19 Answers
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How do you organise multiple git repositories, so that all of them are backed up together?
...d-out on a few machines. This was a pretty good backup system, and allowed m>me m> easily work on any of the machines. I could checkout a specific project, commit and it updated the 'master' project, or I could checkout the entire thing.
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Get last record in a queryset
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You could simply do som>me m>thing like this, using reverse():
queryset.reverse()[0]
Also, beware this warning from the Django docum>me m>ntation:
... note that reverse() should
generally only be called on a QuerySet
which has a defined ordering ...
Python: print a generator expression?
In the Python shell, if I enter a list comprehension such as:
5 Answers
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Seedable JavaScript random number generator
The JavaScript Math.random() function returns a random value between 0 and 1, automatically seeded based on the current tim>me m> (similar to Java I believe). However, I don't think there's any way to set you own seed for it.
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Able to push to all git remotes with the one command?
...solution. BTW you can use xargs -l instead of -L 1, the -l option is the sam>me m> as -L 1. Also, som>me m>tim>me m>s I add --all to the git push. git remote | xargs -l git push --all
– Tony
Jun 18 '14 at 13:34
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Why is it important to override GetHashCode when Equals m>me m>thod is overridden?
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Yes, it is important if your item will be used as a key in a dictionary, or HashSet<T>, etc - since this is used (in the absence of a custom IEqualityComparer<T>) to group items into buckets. If the hash-code for two items do...
How can you find the height of text on an HTML canvas?
The spec has a context.m>me m>asureText(text) function that will tell you how much width it would require to print that text, but I can't find a way to find out how tall it is. I know it's based on the font, but I don't know to convert a font string to a text height.
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