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How to write a Python module/package?
...definitions and statements. The file name is the module name with the suffix .py
create hello.py then write the following function as its content:
def helloworld():
print "hello"
Then you can import hello:
>>> import hello
>>> hello.helloworld()
'hello'
>>>
To gr...
How to copy directories in OS X 10.7.3?
... my home directory there in Favorites or anywhere else. Very new to Mac OS X and Rails.
– hjaved
Mar 21 '12 at 0:46
cp...
typedef struct vs struct definitions [duplicate]
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The common idiom is using both:
typedef struct S {
int x;
} S;
They are different definitions. To make the discussion clearer I will split the sentence:
struct S {
int x;
};
typedef struct S S;
In the first line you are defining the identifier S within the struct nam...
How to track down a “double free or corruption” error
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Setting MALLOC_CHECK_2 actually fixed my double free problem (although it's not fixing if it's in debug mode only)
– puk
Jan 18 '19 at 6:30
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Export Data from mysql Workbench 6.0
I'm trying to export my database, using MySQL Workbench 6.0 on Windows, to send to my db instance in Amazon RDS, but i'm getting this error:
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how to “reimport” module to python then code be changed after import
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For Python 2.x
reload(foo)
For Python 3.x
import importlib
import foo #import the module here, so that it can be reloaded.
importlib.reload(foo)
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Logic to test that 3 of 4 are True
...+: the standard (§4.7/4) indicates that converting bool to int gives the expected values 0 or 1.
In Java and C#, you can use the following construct:
if ((a?1:0) + (b?1:0) + (c?1:0) + (d?1:0) == 3)
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How to import local packages without gopath
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Go dependency management summary:
vgo if your go version is: x >= go 1.11
dep or vendor if your go version is: go 1.6 >= x < go 1.11
Manually if your go version is: x < go 1.6
Edit 3: Go 1.11 has a feature vgo which will replace dep.
To use vgo, see Modules documentati...
C# difference between == and Equals()
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When == is used on an expression of type object, it'll resolve to System.Object.ReferenceEquals.
Equals is just a virtual method and behaves as such, so the overridden version will be used (which, for string type compares the contents).
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Delete all but the most recent X files in bash
Is there a simple way, in a pretty standard UNIX environment with bash, to run a command to delete all but the most recent X files from a directory?
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