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Python: Why is functools.partial necessary?

...tack frame. Neither the function generated by partial nor lambdas have docstrings by default (though you can set the doc string for any objects via __doc__). You can find more details in this blog: Partial Function Application in Python ...
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C/C++ macro string concatenation

... If they're both strings you can just do: #define STR3 STR1 STR2 The preprocessor automatically concatenates adjacent strings. EDIT: As noted below, it's not the preprocessor but the compiler that does the concatenation. ...
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How to run SQL script in MySQL?

...ssword="yourpassword" < "filepath" I use it this way because when you string it with "" you avoiding wrong path and mistakes with spaces and - and probably more problems with chars that I did not encounter with. With @elcuco comment I suggest using this command with [space] before so it tell...
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How did Google manage to do this? Slide ActionBar in Android application

... } static class MenuDesc { public int icon; public String label; } public SlideMenuAdapter(Activity act, SlideMenu.SlideMenuAdapter.MenuDesc[] items) { super(act, R.id.menu_label, items); this.act = act; this.items = items; } @Overr...
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Python assigning multiple variables to same value? list behavior

...n either case, you can rebind a to a different value (e.g., a = "Now I'm a string!"), but the won't affect the original value, which b and c will still be names for. The difference is that with a list, you can change the value [1, 2, 3] into [1, 2, 3, 4] by doing, e.g., a.append(4); since that's act...
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Rails 3: “field-with-errors” wrapper changes the page appearance. How to avoid this?

... Anurag: if html_tag happens to be nil, or anything other than a string, then a plain html_tag.html_safe would rais an error. Putting it in "#{html_tag}" implicitly calls html_tag.to_s, which hopefully will return a string, which will then be able to respond to html_safe ...
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Deserializing JSON Object Array with Json.net

...; } } public class Customer { [JsonProperty("first_name")] public string Firstname { get; set; } [JsonProperty("last_name")] public string Lastname { get; set; } ... } And you can deserialize your json easily : JsonConvert.DeserializeObject<List<CustomerJson>>(j...
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Why are local variables not initialized in Java?

... chain to the previous exception? I don't remember. Even so, you'd have an extra exception in the way of the real one.) share | improve this answer | follow | ...
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How to print binary tree diagram?

... n23.left = n33; return root; } public static void main(String[] args) { BTreePrinter.printNode(test1()); BTreePrinter.printNode(test2()); } } class Node<T extends Comparable<?>> { Node<T> left, right; T data; public Node(T dat...
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JavaScript: client-side vs. server-side validation

...ans users get faster feedback and more of them sign up, resulting in $100k extra revenue per year, it more than pays for the extra maintenance costs. DRY is a very good principle, but it's not the only consideration. Code quality is really measured in how well it serves users and an organization in ...