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Swift Beta performance: sorting arrays
...amp;x_c, CInt(x_c.count))
let c_stop:UInt64 = mach_absolute_time();
This converts the absolute times to seconds:
static const uint64_t NANOS_PER_USEC = 1000ULL;
static const uint64_t NANOS_PER_MSEC = 1000ULL * NANOS_PER_USEC;
static const uint64_t NANOS_PER_SEC = 1000ULL * NANOS_PER_MSEC;
mach_t...
Find a value anywhere in a database
...(
'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(CONVERT(varchar(max), ' + @ColumnName + '), 3630)
FROM ' + @TableName + ' (NOLOCK) ' +
' WHERE CONVERT(varchar(max), ' + @ColumnName + ') LIKE ' + @SearchStr2
)
END
END...
In Python, how do I index a list with another list?
...
It works better if you need to convert it for array operations anyways. Too time-consuming for regular list operations.
– frankliuao
Jan 3 '19 at 19:25
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Understanding __get__ and __set__ and Python descriptors
...AttributeError: __delete__
And you can't assign a variable that can't be converted to a float:
>>> t1.celsius = '0x02'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 7, in __set__
ValueError: invalid literal for float(): ...
How does this print “hello world”?
... symbols) = 127 possible values, which can be represented with 7 bits.
We converted each UTF-8 (16 bit) character to 7 bits, and gain more than 56% compression ratio. So we could send texts with twice length in the same number of SMSs. (It is somehow the same thing happened here).
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Simple way to create matrix of random numbers
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First, create numpy array then convert it into matrix. See the code below:
import numpy
B = numpy.random.random((3, 4)) #its ndArray
C = numpy.matrix(B)# it is matrix
print(type(B))
print(type(C))
print(C)
...
What is the difference between a strongly typed language and a statically typed language?
...he type system. C is notoriously weakly typed because any pointer type is convertible to any other pointer type simply by casting. Pascal was intended to be strongly typed, but an oversight in the design (untagged variant records) introduced a loophole into the type system, so technically it is we...
WPF TemplateBinding vs RelativeSource TemplatedParent
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One more thing - TemplateBindings don't allow value converting. They don't allow you to pass a Converter and don't automatically convert int to string for example (which is normal for a Binding).
share...
Join/Where with LINQ and Lambda
...ple. Its really convenient. If i suffer any performance penalties then ill convert the query to Dapper
– ozzy432836
Jun 27 at 10:59
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Is there a way to access method arguments in Ruby?
...o #{eval arg.to_s} to get it to work, otherwise you get a TypeError: can't convert Symbol into String
– Javid Jamae
Oct 11 '12 at 3:03
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