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How to prevent a background process from being stopped after closing SSH client in Linux
...ackground (with an ampersand at the end of the command) and redirecting stdout to a file.
20 Answers
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With Mercurial, how can I “compress” a series of changesets into one before pushing?
...
How about the Collapse Extension?
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How to calculate the angle between a line and the horizontal axis?
...won't have a meaningful sine and cosine).
EDIT (Feb. 28, 2017): Even without normalizing (deltaX, deltaY):
The sign of deltaX will tell you whether the cosine described in step 3 is positive or negative.
The sign of deltaY will tell you whether the sine described in step 4 is positive or negativ...
javac error: Class names are only accepted if annotation processing is explicitly requested
...xecute the compiled code. You can't mix javac with the ClassName only (without the java extension).
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How does the compilation/linking process work?
... deals with the #includes, #defines and other preprocessor directives. The output of this step is a "pure" C++ file without pre-processor directives.
Compilation: the compiler takes the pre-processor's output and produces an object file from it.
Linking: the linker takes the object files produced by...
Unique fields that allow nulls in Django
...lue, expression, connection, contex):
"""
Gets value right out of the db and changes it if its ``None``.
"""
if value is None:
return ''
else:
return value
def to_python(self, value):
"""
Gets value right out of th...
How to print formatted BigDecimal values?
...ormat:
DecimalFormat df = new DecimalFormat("#,###.00");
System.out.println(df.format(new BigDecimal(123456.75)));
System.out.println(df.format(new BigDecimal(123456.00)));
System.out.println(df.format(new BigDecimal(123456123456.78)));
Here is the result:
123,456.75
123,456....
Wrapping a C library in Python: C, Cython or ctypes?
... in less than one work day. (I only implemented the functions we needed, about 15 functions).
We were previously using a third-party module, PyUSB, for the same purpose. PyUSB is an actual C/Python extension module. But PyUSB wasn't releasing the GIL when doing blocking reads/writes, which was ca...
How to log source file name and line number in Python
...cal("This is critical")
logger.error("An error occurred")
Generates this output:
2017-06-06:17:07:02,158 DEBUG [log.py:11] This is a debug log
2017-06-06:17:07:02,158 INFO [log.py:12] This is an info log
2017-06-06:17:07:02,158 CRITICAL [log.py:13] This is critical
2017-06-06:17:07:02,158 ...
What is a clearfix?
...IE9 or lower, you can use flexbox freely, and don't need to use floated layouts.
It's worth noting that today, the use of floated elements for layout is getting more and more discouraged with the use of better alternatives.
display: inline-block - Better
Flexbox - Best (but limited browser suppor...