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What is an 'endpoint' in Flask?
...
@app.route('/greeting/<name>')
def give_greeting(name):
return 'Hello, {0}!'.format(name)
Note that the function you referred to (add_url_rule) achieves the same goal, just without using the decorator notation. Therefore, the following is the same:
# No "route" decorator here. We will ...
How can I echo a newline in a batch file?
...
echo hello & echo.world
This means you could define & echo. as a constant for a newline \n.
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puts vs logger in rails rake tasks
...tputs to STDOUT and log file"
task :test => :environment do
puts "HELLO FROM PUTS"
Rails.logger.info "HELLO FROM LOGGER"
end
end
Running rake stdout_and_log:test outputs
HELLO FROM PUTS
HELLO FROM LOGGER
while
HELLO FROM LOGGER
has been added to log/development.log.
Running r...
Is there a way to specify how many characters of a string to print out using printf()?
...ude <stdio.h>
int main(int argc, char *argv[])
{
const char hello[] = "Hello world";
printf("message: '%.3s'\n", hello);
printf("message: '%.*s'\n", 3, hello);
printf("message: '%.*s'\n", 5, hello);
return 0;
}
Prints:
message: 'Hel'
message: 'Hel'
m...
How can I add a string to the end of each line in Vim?
...
This is the First line.
This is the second.
The third.
To insert " Hello world." (space + clipboard) at the end of each of these lines:
On a character in the first line, press Ctrl-V (or Ctrl-Q if Ctrl-V
is paste).
Press jj to extend the visual block over three lines.
Press $ to extend th...
Collapse sequences of white space into a single character and trim string
...y or use the following Cocoa-native solution:
NSString *theString = @" Hello this is a long string! ";
NSCharacterSet *whitespaces = [NSCharacterSet whitespaceCharacterSet];
NSPredicate *noEmptyStrings = [NSPredicate predicateWithFormat:@"SELF != ''"];
NSArray *parts = [theStri...
PHP: How to handle
...anyway)
$content = simplexml_load_string(
'<content><![CDATA[Hello, world!]]></content>'
);
echo (string) $content;
// or with parent element:
$foo = simplexml_load_string(
'<foo><content><![CDATA[Hello, world!]]></content></foo>'
);
echo (s...
Javascript replace with reference to matched group?
I have a string, such as hello _there_ . I'd like to replace the two underscores with <div> and </div> respectively, using JavaScript . The output would (therefore) look like hello <div>there</div> . The string might contain multiple pairs of underscores.
...
What are the Ruby Gotchas a newbie should be warned about? [closed]
... itself does not. For example, Greeting << " world!" if Greeting == "Hello" does not generate an error or warning. This is similar to final variables in Java, but Ruby does also have the functionality to "freeze" an object, unlike Java.
Some features which differ notably from other languages...
How do I run a shell script without using “sh” or “bash” commands?
...w what the problem with the system is. I created a new shell script named "hello" with just an "echo "hello" " in it. I changed its permissions and tried ./hello. It dosn't work. it says-
– Rameez Hussain
Jan 8 '12 at 19:42
...