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How to check command line parameter in “.bat” file?
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Look at http://ss64.com/nt/if.html for an answer; the command is IF [%1]==[] GOTO NO_ARGUMENT or similar.
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Add custom icons to font awesome
...nt Awesome 5, you can create custom icons with your own SVG data. Here's a demo GitHub repo that you can play with. And here's a CodePen that shows how something similar might be done in <script> blocks.
In either case, it simply involves using library.add() to add an object like this:
expor...
How to get the result of OnPostExecute() to main activity because AsyncTask is a separate class?
...ponse, just return it
final String output = "Any out, mine is just demo output";
// Return it from here to post execute
return output;
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
// Here you can't guarantee that ...
phpcms v9类别调用方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...'caches_model'.DIRECTORY_SEPARATOR.'caches_data'.DIRECTORY_SEPARATOR);
pc_base::load_app_func('util','content');
class type {
private $db;
function __construct() {
$this->db = pc_base::load_model('content_model');
}
/**
* 按照模型搜索
*/
public function init() {
if(!i...
Can I use a binary literal in C or C++?
...ortable itoa function, or implement your own.
Unfortunately you cannot do base 2 formatting with STL streams (since setbase will only honour bases 8, 10 and 16), but you can use either a std::string version of itoa, or (the more concise, yet marginally less efficient) std::bitset.
#include <boo...
Rails raw SQL example
...ql = "Select * from ... your sql query here"
records_array = ActiveRecord::Base.connection.execute(sql)
records_array would then be the result of your sql query in an array which you can iterate through.
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How to get the screen width and height in iOS?
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You might want to base the macro on AnswerBot's answer since that seems like the best answer.
– griotspeak
Aug 8 '13 at 13:17
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How to access outer class from an inner class?
... add metaclass
_METACLASS_ = '_metaclass_helper_'
def with_metaclass(meta, base=object):
return meta(_METACLASS_, (base,), {})
class OuterMeta(type):
def __new__(mcs, name, parents, dct):
cls = super(OuterMeta, mcs).__new__(mcs, name, parents, dct)
for klass in dct.values()...
How to implement a queue with three stacks?
...the O(1) version that has lazy evaluation. The problem is that it's really based on lazy evaluation. The question is if it can be translated to a 3-stack algorithm without lazy evaluation.
UPDATE: Another related algorithm is described in paper "Stacks versus Deques" by Holger Petersen, published i...
How do function pointers in C work?
...tring_Struct* ImmutableString;
struct ImmutableString_Struct
{
String base;
char* (*get)(const void* self);
int (*length)(const void* self);
};
ImmutableString newImmutableString(const char* value);
Basically, for all subclasses, the available methods are once again function pointer...