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Hashing a file in Python
...on to read to the EOF so I can get an appropriate hash, whether it is sha1 or md5. Please help. Here is what I have so far:
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Are Java static calls more or less expensive than non-static calls?
Is there any performance benefit one way or another? Is it compiler/VM specific? I am using Hotspot.
12 Answers
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Java Timer vs ExecutorService?
...hedule a task using java.util.Timer . I was looking around and saw ExecutorService can do the same. So this question here, have you used Timer and ExecutorService to schedule tasks, what is the benefit of one using over another?
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Why does Python code use len() function instead of a length method?
...s which have a length and use the built-in len() function, which calls it for you, similar to the way you would implement __iter__() and use the built-in iter() function (or have the method called behind the scenes for you) on objects which are iterable.
See Emulating container types for more infor...
What is `mt=8` in iTunes links for the App Store?
Does anyone know the significance of the mt parameter in App Store Links?
8 Answers
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Setting an int to Infinity in C++
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int a = std::numeric_limits<int>::max();
Which would be 2^31 - 1 (or 2 147 483 647) if int is 32 bits wide on your implementation.
If you really need infinity, use a floating point number type, like float or double. You can then get infinity with:
double a = std::numeric_limits<double&...
Conditional Variable vs Semaphore
When should one use a semaphore and when should one use a conditional variable (CondVar) ?
6 Answers
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Is it possible to set the equivalent of a src attribute of an img tag in CSS?
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Use content:url("image.jpg").
Full working solution (Live Demo):
<!doctype html>
<style>
.MyClass123{
content:url("http://imgur.com/SZ8Cm.jpg");
}
</style>
<img class="MyClass123"/>
Tested and working:
Chrome 14....
AngularJS ng-if with multiple conditions
... ng-if="key == 'City' || key == 'County'">
<pre>City or County !!! {{$parent.localityTypeRadio}}</pre>
</div>
<div ng-if="key == 'Town'">
<pre>Town!!! {{$parent.localityTypeRadio}}</pre>
</div>
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Which is the preferred way to concatenate a string in Python?
...'s string can't be changed, I was wondering how to concatenate a string more efficiently?
12 Answers
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