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How to redirect 'print' output to a file using python?
... You can even use the different message levels (critical, error, warning, info, debug) to, for example, only print major issues to the console, but still log minor code actions to a file.
A simple example
Import logging, get the logger, and set the processing level:
import logging
logger = loggi...
How can the Euclidean distance be calculated with NumPy?
...lding the dist_sq. Our hotdog example then becomes:
# Chaining generators
info = in_range_with_dist_sq(origin, walking_distance, hotdog_stands)
info = (stand, dist_sq**0.5 for stand, dist_sq in info)
for stand, dist in info:
print("%s %.2fm" % (stand, dist))
...
How to copy an object in Objective-C
... protocol NSCopying and implement -(id)copyWithZone:(NSZone *)zone. You're free to do whatever you want; though the idea is you make a real copy of yourself and return it. You call copyWithZone on all your fields, to make a deep copy. A simple example is
@interface YourClass : NSObject <NSCopyin...
How to exclude a directory in find . command
... answered Apr 1 '13 at 1:26
GetFreeGetFree
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What is meant by Resource Acquisition is Initialization (RAII)?
... destructor didn't execute here? Is my resource leaked or will it be never freed or released?
– Destructor
Aug 20 '15 at 16:40
8
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Why should we include ttf, eot, woff, svg,… in a font-face
...noyed that this meant anyone could download expensive-to-license fonts for free.
Time passes, SVG 1.1 adds a "fonts" chapter that explains how to model a font purely using SVG markup, and people start to use it. More time passes and it turns out that they are absolutely terrible compared to just a n...
How to delete or add column in SQLITE?
...leName + "_old;");
}
To get the table's column, I used the "PRAGMA table_info":
public List<String> getTableColumns(String tableName) {
ArrayList<String> columns = new ArrayList<String>();
String cmd = "pragma table_info(" + tableName + ");";
Cursor cur = getDB().raw...
How to declare std::unique_ptr and what is the use of it?
...loc), then you will have to clear that memory on your own (using delete or free respectively).
In the below code,
int* heapInt = new int(5);//initialize int in heap memory
.
.//use heapInt
.
delete heapInt;
Here, you will have to delete heapInt, when it is done using. If it is not deleted, then mem...
In pure functional languages, is there an algorithm to get the inverse function?
...some cases, yes! There's a beautiful paper called Bidirectionalization for Free! which discusses a few cases -- when your function is sufficiently polymorphic -- where it is possible, completely automatically to derive an inverse function. (It also discusses what makes the problem hard when the func...
Is it possible to create a multi-line string variable in a Makefile
...r variable on standard output, there is another solution :
do-echo:
$(info $(YOUR_MULTILINE_VAR))
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