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How do I check if a column is empty or null in MySQL?
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This will select all rows where some_col is NULL or '' (empty string)
SELECT * FROM table WHERE some_col IS NULL OR some_col = '';
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Block Declaration Syntax List
Block syntax in Objective C (and indeed C, I presume) is notoriously incongruous. Passing blocks as arguments looks different than declaring blocks as ivars, which looks different than typedef ing blocks.
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Angular IE Caching issue for $http
... 304 response for all the subsequent calls. Although the request is the same, the response is not going be the same in my case. I want to disable this cache. I tried adding the cache attribute to $http.get but still it didn't help. How can this issue be resolved?
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How do I get the path of a process in Unix / Linux
In Windows environment there is an API to obtain the path which is running a process. Is there something similar in Unix / Linux?
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Is it possible to implement a Python for range loop without an iterator variable?
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Off the top of my head, no.
I think the best you could do is something like this:
def loop(f,n):
for i in xrange(n): f()
loop(lambda: <insert expression here>, 5)
But I think you can just live with the extra i variable.
Here is the option to use the _ variable, which in re...
jQuery Determine if a matched class has a given id
What is jQuery has id equivalent of the following statement?
8 Answers
8
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Run git pull over all subdirectories [duplicate]
...ll git pulls the individual directories
To play around with find, I recommend using echo after -exec to preview, e.g.:
find . -type d -depth 1 -exec echo git --git-dir={}/.git --work-tree=$PWD/{} status \;
Note: if the -depth 1 option is not available, try -mindepth 1 -maxdepth 1.
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Java equivalent to C# extension methods
I am looking to implement a functionality in a list of object as I would in C# using an extension method.
14 Answers
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How to make lists contain only distinct element in Python? [duplicate]
...from Python 3.6, but it says "the order-preserving aspect of this new implementation is considered an implementation detail and should not be relied upon". Since they're both based on hashes, I'd think set would be the same, but it's not mentioned, so apparently not: docs.python.org/3.6/whatsnew/3.6...
how to convert milliseconds to date format in android?
...eDateFormat;
import java.util.Calendar;
public class Test {
/**
* Main Method
*/
public static void main(String[] args) {
System.out.println(getDate(82233213123L, "dd/MM/yyyy hh:mm:ss.SSS"));
}
/**
* Return date in specified format.
* @param milliSeconds Date in milliseconds
* @param d...