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Bash, no-arguments warning, and case decisions
...e console, as will /bin/dash /tmp/test.sh. On the other hand, /tmp/test.sh foo will echo "1", and /tmp/test.sh first second will echo "2".
– eschwartz
Mar 20 '19 at 1:53
...
AngularJS : When to use service instead of factory
... Service when you need just a simple object such as a Hash, for
example {foo;1, bar:2} It’s easy to code, but you cannot instantiate
it.
Use Factory when you need to instantiate an object, i.e new
Customer(), new Comment(), etc.
Use Provider when you need to configure it. i.e. test url, ...
What are some better ways to avoid the do-while(0); hack in C++?
...tion as of the function, it is quite logical approach.
For example:
void foo(...)
{
if (!condition)
{
return;
}
...
if (!other condition)
{
return;
}
...
if (!another condition)
{
return;
}
...
if (!yet another condition)
{
return;...
Detecting 'stealth' web-crawlers
...lenty of tricks with comments, CDATA elements, entities, etc:
<a href="foo<!--bar-->"> (comment should not be removed)
<script>var haha = '<a href="bot">'</script>
<script>// <!-- </script> <!--><a href="bot"> <!-->
...
is node.js' console.log asynchronous?
... // For example: node foo.js > out.txt
stdout.readable = false;
}
return stdout;
});
In case of a TTY and UNIX we end up here, this thing inherits from socket. So all that node bascially does is to push the data on to the socket, the...
What is a “static” function in C?
...aces are preferred for this usage.
// inside some .cpp file:
static void foo(); // old "C" way of having internal linkage
// C++ way:
namespace
{
void this_function_has_internal_linkage()
{
// ...
}
}
The second usage is in the context of a class. If a class has a static membe...
Why am I seeing “TypeError: string indices must be integers”?
...gh a Pandas dataset Pandas documentation for iterrows
data = pd.read_csv('foo.csv')
for index,item in data.iterrows():
print('{} {}'.format(item["gravatar_id"], item["position"]))
note that you need to handle the index in the dataset that is also returned by the function.
...
Check for array not empty: any?
... def size?
respond_to?(:size) && size > 0
end
end
> "foo".size?
=> true
> "".size?
=> false
> " ".size?
=> true
> [].size?
=> false
> [11,22].size?
=> true
> [nil].size?
=> true
This is fairly descriptive, logically asking "does this obj...
#include in .h or .c / .cpp?
... In other cases yes, you can forward declare incomplete types like struct foo; or class bar; and not include the header file, but now you've increased your maintenance burden. You have to keep your forward declarations in sync with what's in the header file - it's just easier to include the header...
How do I upload a file with metadata using a REST web service?
...e request... also, what prevents you from just writing curl -f 'metadata={"foo": "bar"}'?
– Erik Kaplun
Apr 2 '15 at 15:18
...