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undefined reference to `WinMain@16'
... flag is just semi-documented.
Building without that semi-documented flag one would have to more specifically tell the linker which subsystem value one desires, and some Windows API import libraries will then in general have to be specified explicitly:
C:\test> gnuc x.cpp -Wl,-subsystem,window...
What is the purpose of the single underscore “_” variable in Python?
...me with lambda functions, lambda arg: 1.0 is creating a function requiring one argument but not using it, that will be caught by lint, the fix is to write lambda _: 1.0. An unused variable is often hiding a bug/typo (set day but used dya the next line).
For translation lookup in i18n (see the
gettex...
Build tree array from flat array in javascript
...
As mentioned by @Sander, @Halcyon`s answer assumes a pre-sorted array, the following does not. (It does however assume you have loaded underscore.js - though it could be written in vanilla javascript):
Code
// Example usage
va...
How can I easily view the contents of a datatable or dataview in the immediate window
... Debug.Write(Environment.NewLine);
}
}
#endregion
I then I will call one of the above functions in the immediate window and the results will appear there as well.
For example if I want to see the contents of a variable 'myDataset' I will call printTbl(myDataset). After hitting enter, the resul...
Using module 'subprocess' with timeout
... def __init__(self, cmd):
self.cmd = cmd
self.process = None
def run(self, timeout):
def target():
print 'Thread started'
self.process = subprocess.Popen(self.cmd, shell=True)
self.process.communicate()
print 'Thread fini...
Finding a branch point with Git?
...the letters attached to SHA prefixes and commit messages (my repo can be cloned from here, if that's interesting to anyone):
G: a9546a2 merge from topic back to master
F: e7c863d commit on master after master was merged to topic
E: 648ca35 merging master onto topic
D: 37ad159 post-branch commit on ...
Difference between a user and a schema in Oracle?
...thing. Of course, the confusion stems partly from the fact that there is a one-to-one correspondence between USER and SCHEMA, and a user's schema shares its name.
– Mahesh
Apr 8 '17 at 13:03
...
What is the difference between “Class.forName()” and “Class.forName().newInstance()”?
...her good examples: they use dynamic runtime loading to load and create components they don't know anything before the runtime.
Actually, if you want to go further, have a look at Ted Neward paper Understanding Class.forName() that I was paraphrasing in the paragraph just above.
EDIT (answering a q...
TypeError: got multiple values for argument
...nd width arguments).
This is easy to see in the example, but of course if one mixes up the arguments at call, it may not be easy to debug:
# misplaced height and width
color_box(20, 30, color="green")
Here, color is assigned 20, then args=[30] and color is again assigned "green".
...
Rails extending ActiveRecord::Base
I've done some reading about how to extend ActiveRecord:Base class so my models would have some special methods. What is the easy way to extend it (step by step tutorial)?
...