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How to randomly select rows in SQL?
...re each row gets a random number, and then a large unindexed random number set is sorted?
– Andrey
Apr 19 '14 at 16:04
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How can I find out what FOREIGN KEY constraint references a table in SQL Server?
I am trying to drop a table but getting the following message:
15 Answers
15
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How to debug a single thread in Visual Studio?
...n the breakpoints window (select all breakpoints).
Right click and select "Settings...".
Check "Conditions" and select "Filter" in the dropdown
Enter "ThreadId=(current thread id)".
So all threads are executed, but the debugger hits on the current thread only.
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How to urlencode a querystring in Python?
...:
If you need ordered name-value pairs or multiple values for a name then set params like so:
params=[('name1','value11'), ('name1','value12'), ('name2','value21'), ...]
instead of using a dictionary.
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How to reverse a singly linked list using only two pointers?
...The only bug, though, is the last line in the reverse() function should be setting first, I believe. Otherwise, the original code worked OK when plugged into your neat test harness. You get +1 from me even so - but an explanation of what you consider the 'obvious errors' would improve your answer....
CSS: center element within a element
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Set text-align:center; to the parent div, and margin:auto; to the child div.
#parent {
text-align:center;
background-color:blue;
height:400px;
width:600px;
}
.block {
height:100px;
width:2...
How do I clone a single branch in Git?
...from the remote called origin.
Creates and checks out a new branch that is set up to track the source branch you just cloned.
Hopefully that will be something like what you are after.
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impr...
Find the most frequent number in a numpy vector
...r loop
>>>
>>> max(map(lambda val: (a.count(val), val), set(a)))[1]
12
>>> %timeit max(map(lambda val: (a.count(val), val), set(a)))[1]
100000 loops, best of 3: 4.11 µs per loop
>>>
Best is 'max' with 'set' for small arrays like the problem.
According to @Da...
Handling InterruptedException in Java
...ur method. You should therefore log the fact an interruption took place by setting the interrupted flag: Thread.currentThread().interrupt()
Example: The user has asked to print a sum of two values. Printing "Failed to compute sum" is acceptable if the sum can't be computed (and much better than...
Can you use reflection to find the name of the currently executing method?
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As of .NET 4.5 you can also use [CallerMemberName]
Example: a property setter (to answer part 2):
protected void SetProperty<T>(T value, [CallerMemberName] string property = null)
{
this.propertyValues[property] = value;
OnPropertyChanged(property);
}
publ...