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Linux command (like cat) to read a specified quantity of characters
...ere a command like cat in linux which can return a specified quantity of characters from a file?
9 Answers
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How to repeat a string a variable number of times in C++?
I want to insert 'n' spaces (or any string) at the beginning of a string in C++. Is there any direct way to do this using either std::strings or char* strings?
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Regex: matching up to the first occurrence of a character
...egular expression look only for matches starting from the beginning of the string. In this case, that would effectively be a no-op if you run the regular expression only once. If you want to look for multiple matches within a single string, the first ^ would have to go.
– Dan B...
Effects of changing Django's SECRET_KEY
...the items listed here use SECRET_KEY through django.utils.crypt.get_random_string() which uses it to seed the random engine. This won't be impacted by a change in value of SECRET_KEY.
User experience directly impacted by a change of value are:
sessions, the data decode will break, that is valid f...
Does C# have an equivalent to JavaScript's encodeURIComponent()?
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Uri.EscapeDataString or HttpUtility.UrlEncode is the correct way to escape a string meant to be part of a URL.
Take for example the string "Stack Overflow":
HttpUtility.UrlEncode("Stack Overflow") --> "Stack+Overflow"
Uri.EscapeUriSt...
Check whether an input string contains a number in javascript
...ion requires "contains number", not "is number". So:
function hasNumber(myString) {
return /\d/.test(myString);
}
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AWS: How to disable all services?
...m/ec2
For example:
Stop running instances, delete volumes, remove elastic IPs, etc.
Otherwise, I recommend sending an email to webservices@amazon.com from the email you used to signup with their service.
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How to find out what character key is pressed?
.../Firefox/Opera
keynum = e.which;
}
alert(String.fromCharCode(keynum));
}
</script>
<form>
<input type="text" onkeypress="return myKeyPress(event)" />
</form>
JQuery:
$(document).keypress(function(event){
alert(String.fromCharCode(ev...
How can you find out which process is listening on a port on Windows?
...onnection or listening port. In some cases well-known executables host multiple independent components, and in these cases the sequence of components involved in creating the connection or listening port is displayed. In this case the executable name is in [] at the bottom, on top is the comp...
How to kill/stop a long SQL query immediately?
... which implies draining all the intermediate results in the communication pipe first (eg. all results in the TCP/IP send/received buffers and all in-memory buffers).
– Remus Rusanu
Apr 10 '13 at 9:34
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