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What's the difference between `1L` and `1`?
...sume less memory. A double ("numeric") vector uses 8 bytes per element. An integer vector uses only 4 bytes per element. For large vectors, that's less wasted memory and less to wade through for the CPU (so it's typically faster).
Mostly this applies when working with indices.
Here's an example whe...
How to Use Order By for Multiple Columns in Laravel 4?
...
You can do as @rmobis has specified in his answer, [Adding something more into it]
Using order by twice:
MyTable::orderBy('coloumn1', 'DESC')
->orderBy('coloumn2', 'ASC')
->get();
and the second way to do it is,
Using raw order by:
MyTable::orderByRaw("coloumn1 DESC, coloumn2 AS...
How can I extract the folder path from file path in Python?
..._93_v141b.mdb')
>>> wkspFldr = existGDBPath.parent
>>> print wkspFldr
Path('T:\Data\DBDesign')
WITH OS MODULE
Use the os.path module:
>>> import os
>>> existGDBPath = r'T:\Data\DBDesign\DBDesign_93_v141b.mdb'
>>> wkspFldr = os.path.dirname(existGDBPat...
Reusing a PreparedStatement multiple times
...redStatement statement = connection.prepareStatement(SQL);
) {
int i = 0;
for (Entity entity : entities) {
statement.setObject(1, entity.getSomeProperty());
// ...
statement.addBatch();
i++;
if (i % 1000 == 0 || i == ...
Why do we always prefer using parameters in SQL statements?
... Injection attacks when the database is used in conjunction with a program interface such as a desktop program or web site.
In your example, a user can directly run SQL code on your database by crafting statements in txtSalary.
For example, if they were to write 0 OR 1=1, the executed SQL would be...
How do I set the request timeout for one controller action in an asp.net mvc application
... msdn.microsoft.com/en-us/library/vstudio/… executionTimeout Optional Int32 attribute. Specifies the maximum number of seconds that a request is allowed to execute before being automatically shut down by ASP.NET. This time-out applies only if the debug attribute in the compilation element is ...
binning data in python with scipy/numpy
...m.rand(100)
bins = 10
slices = np.linspace(0, 100, bins+1, True).astype(np.int)
counts = np.diff(slices)
mean = np.add.reduceat(data, slices[:-1]) / counts
print mean
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In Python, how do I create a string of n characters in one line of code?
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You can fit anything into one-line, eh? Quite a claim, re: Python :)
– Gregg Lind
Sep 14 '09 at 21:49
6
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In C/C++ what's the simplest way to reverse the order of bits in a byte?
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You can squeeze the array into somewhat fewer than 256 bytes if you ignore palindromes.
– wilhelmtell
Apr 8 '10 at 19:56
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Default string initialization: NULL or Empty? [closed]
...sier to understand. This is why I always test booleans with "if (var)," pointers with "if (var != NULL)" and integers with "if (var != 0)" -- they all mean the same thing to the compiler, but they carry additional information that helps the poor developer who maintains my code.
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