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Numeric for loop in Django templates
...onal context. Sometimes this comes in handy
{% for i in '0123456789'|make_list %}
{{ forloop.counter }}
{% endfor %}
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What differences, if any, between C++03 and C++11 can be detected at run-time?
...led with a C++ compiler, will return 1 (the trivial sulution with
#ifdef __cplusplus is not interesting).
8 Answers
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Block Comments in Clojure
... A word of warning -- the (comment) macro expands to nil. Use #_ to comment a single form, or #_(comment ...) to comment multiple forms without inserting a nil.
– treat your mods well
Dec 18 '11 at 2:55
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How to implement Enums in Ruby?
...to enhance readability without littering code with literal strings.
postal_code[:minnesota] = "MN"
postal_code[:new_york] = "NY"
Constants are appropriate when you have an underlying value that is important. Just declare a module to hold your constants and then declare the constants within that.
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What is the relative performance difference of if/else versus switch statement in Java?
...view a switch statement as follows:
switch (<condition>) {
case c_0: ...
case c_1: ...
...
case c_n: ...
default: ...
}
where c_0, c_1, ..., and c_N are integral numbers that are targets of the switch statement, and <condition> must resolve to an integer expression.
I...
printf with std::string?
... for some reason, you need to extract the C-style string, you can use the c_str() method of std::string to get a const char * that is null-terminated. Using your example:
#include <iostream>
#include <string>
#include <stdio.h>
int main()
{
using namespace std;
string my...
How to unzip a file using the command line? [closed]
...mmand "Expand-Archive '.\file.zip' '.\unziped\'"
– AK_
Mar 17 '18 at 21:11
@AK_ what about Windows 8 or 8.1?
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Selenium wait until document is ready
...it" function (use a WebDriverWait if you like, I find them ugly):
def wait_for(condition_function):
start_time = time.time()
while time.time() < start_time + 3:
if condition_function():
return True
else:
time.sleep(0.1)
raise Exception('Timeout...
How to animate the change of image in an UIImageView?
...
Try this:
_imageView.image = image;
[_imageView.layer addAnimation:[CATransition animation] forKey:kCATransition];
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window.location.href and window.open () methods in JavaScript
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What's the difference between using window.open(newUrl, '_self') and location.href = newUrl` ? Both will open the newUrl in the same tab.
– Harry
Sep 15 at 14:56
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