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Find current directory and file's directory [duplicate]
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what does __file__ signifies here? It does not work for me.
– Alex Raj Kaliamoorthy
Jun 17 '16 at 15:22
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JsonMappingException: No suitable constructor found for type [simple type, class ]: can not instanti
... you don't need to declare an empty, no-argument default constructor, Java does it for you! (As long as you don't define any other constructors.)
– Jonik
Feb 4 '15 at 13:21
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Type-juggling and (strict) greater/lesser-than comparisons in PHP
...same.
PHP's == operator is not transitive, i.e. from $a == $b and $b == $c does not follows $a == $c:
var_dump(true == "a"); // bool(true)
var_dump("a" == 0); // bool(true)
var_dump(true == 0); // bool(false)
In order to constitute a partial order <=/>= has to be reflexive, anti-symme...
How to use DISTINCT and ORDER BY in same SELECT statement?
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Extended sort key columns
The reason why what you want to do doesn't work is because of the logical order of operations in SQL, which, for your first query, is (simplified):
FROM MonitoringJob
SELECT Category, CreationDate i.e. add a so called extended sort key column
ORDER BY Creati...
Difference between HBase and Hadoop/HDFS
...or streaming access of large files.
Follows write-once read-many ideology.
Doesn't support random read/write.
HBase
Stores key/value pairs in columnar fashion (columns are clubbed together as column families).
Provides low latency access to small amounts of data from within a large data set.
Pro...
How to use clock() in C++
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Does this return the answer in seconds?
– Arnav Borborah
May 18 '17 at 12:54
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Select all columns except one in MySQL?
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Like @Jan Koritak said below, this answer doesn't actually work if the title's columns that you want to remove are also a sub-string of the title for any columns you wish to keep. There is a better answer that is similar to this that can be found here.
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Execute code when Django starts ONCE only?
...ig = 'myapp.apps.MyAppConfig'
For Django < 1.7
The number one answer does not seem to work anymore, urls.py is loaded upon first request.
What has worked lately is to put the startup code in any one of your INSTALLED_APPS init.py e.g. myapp/__init__.py
def startup():
pass # load a big th...
How to get disk capacity and free space of remote computer
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in powershell why does 1mb return a value of 1048576 and not 1000000 ????
– oldboy
Jan 1 at 4:56
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Asynchronous shell exec in PHP
I've got a PHP script that needs to invoke a shell script but doesn't care at all about the output. The shell script makes a number of SOAP calls and is slow to complete, so I don't want to slow down the PHP request while it waits for a reply. In fact, the PHP request should be able to exit without ...