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How to check that a string is a palindrome using regular expressions?
...tate machine is composed of nodes and edges. Each edge is annotated with a letter from a finite alphabet. One or more nodes are special "accepting" nodes and one node is the "start" node. As each letter is read from a given word we traverse the given edge in the machine. If we end up in an accepting...
Capture characters from standard input without waiting for enter to be pressed
...ns that you can use to switch off line buffering (I believe that's called "raw mode", as opposed to "cooked mode" - look into man stty). Curses would handle that for you in a portable manner, if I'm not mistaken.
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How to query as GROUP BY in django?
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An easy solution, but not the proper way is to use raw SQL:
results = Members.objects.raw('SELECT * FROM myapp_members GROUP BY designation')
Another solution is to use the group_by property:
query = Members.objects.all().query
query.group_by = ['designation']
results = Q...
How to read a single char from the console in Java (as the user types it)?
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What you want to do is put the console into "raw" mode (line editing bypassed and no enter key required) as opposed to "cooked" mode (line editing with enter key required.) On UNIX systems, the 'stty' command can change modes.
Now, with respect to Java... see Non bloc...
Unicode equivalents for \w and \b in Java regular expressions?
...regex implementations interpret the \w character class shorthand as "any letter, digit, or connecting punctuation" (usually: underscore). That way, a regex like \w+ matches words like hello , élève , GOÄ_432 or gefräßig .
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How to remove the first character of string in PHP?
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Exec time for the 3 answers :
Remove the first letter by replacing the case
$str = "hello";
$str[0] = "";
// $str[0] = false;
// $str[0] = null;
// replaced by �, but ok for echo
Exec time for 1.000.000 tests : 0.39602184295654 sec
Remove the first letter with sub...
How to printf “unsigned long” in C?
...e we gave the length modifier l, it then accepts an unsigned long int. The letters must be in that order: percent, length, conversion. (There are a few more options, such as width and precision, that you can add. See the man page, as it documents all this precisely!)
– Thanatos...
Instagram how to get my user id from username?
... check if its a valid request is by the cookie submitted in the header. If user_id exist in the cookie proeprty, it'll be considered a valid request. Check out the cookie property on the request header when you navigate to the URL shown
– Kiong
Jul 6 '18 at 15:...
uppercase first character in a variable with bash
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@CMCDragonkai: To lowercase the first letter, use "${foo,}". To lowercase all the letters, use "${foo,,}". To uppercase all the letters, use "${foo^^}".
– Steve
Dec 16 '15 at 21:37
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Android Notification Sound
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Just put your sound file in the Res\raw\siren.mp3 folder, then use this code:
For Custom Sound:
Notification notification = builder.build();
notification.sound = Uri.parse("android.resource://"
+ context.getPackageName() + "/" + R.raw.siren);
Fo...