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Why is “a” != “a” in C?
...th "a"s are distinct. An optimized compiler could keep a single "a" in the read-only location and both the references could refer to that.
Check out the output on gcc here
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UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 20: ordinal not in rang
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You need to read the Python Unicode HOWTO. This error is the very first example.
Basically, stop using str to convert from unicode to encoded text / bytes.
Instead, properly use .encode() to encode the string:
p.agent_info = u' '.join...
How do I find the caller of a method using stacktrace or reflection?
...
StackTraceElement[] stackTraceElements = Thread.currentThread().getStackTrace()
According to the Javadocs:
The last element of the array represents the bottom of the stack, which is the least recent method invocation in the sequence.
A StackTraceElement has g...
Random data in Unit Tests?
... I have seen this work well on a system that had lots of locking and threads. The 'random' seed was writen to a file on each run, then if a run failed, we could work out the path the code took and write a hand written unit test for that case we had missed.
– Ian Ringrose
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What is the most frequent concurrency issue you've encountered in Java? [closed]
...n example might be the classic deadlock or race condition or perhaps EDT threading bugs in Swing. I'm interested both in a breadth of possible issues but also in what issues are most common. So, please leave one specific answer of a Java concurrency bug per comment and vote up if you see one you'v...
Why doesn't Java allow to throw a checked exception from static initialization block?
...ne some examples that may initialize the class (or may not because it is already initialized), and just to draw the attention of the complexity of that it would introduce, I put the examples in another static initalizer:
static {
try {
ClassA a = new ClassA();
Class<ClassB> clazz ...
How to call a Parent Class's method from Child Class in Python?
...obvious, but I feel that without pointing this out people may leave this thread with the impression you have to jump through ridiculous hoops just to access inherited methods in python. Especially as this question rates highly in searches for "how to access a parent class's method in Python", and th...
How can I download HTML source in C#
...ate("http://google.com");
req.Method = "GET";
string source;
using (StreamReader reader = new StreamReader(req.GetResponse().GetResponseStream()))
{
source = reader.ReadToEnd();
}
Console.WriteLine(source);
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How can I use grep to show just filenames on Linux?
...ll only print the file name of the first file. You really need a couple of reads to understand it.
– TheMonkWhoSoldHisCode
May 29 '15 at 12:53
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Please explain about insertable=false and updatable=false in reference to the JPA @Column annotation
...not foreign key (as there is no referenced entity to disable updating). By reading javadoc for updatable I would say that it will just disable to change Person for given Address if it is once persisted. Can you explain please?
– Flowy
Oct 3 '16 at 11:49
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