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How do I Search/Find and Replace in a standard string?
...oldStr,
const std::string& newStr)
{
std::string::size_type pos = 0u;
while((pos = str.find(oldStr, pos)) != std::string::npos){
str.replace(pos, oldStr.length(), newStr);
pos += newStr.length();
}
}
...
Fastest check if row exists in PostgreSQL
...ex on contact, it can usually reduce time cost to 1 ms.
CREATE INDEX index_contact on contact(id);
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Check free disk space for current partition in bash
...
# less than 10GBs free!
fi;
Also for an installer to df -k $INSTALL_TARGET_DIRECTORY might make more sense than df -k "$PWD".
Finally, please note that the --output flag is not available in every version of df / linux.
...
How to fix Python indentation
... *:ret* *:retab*
:[range]ret[ab][!] [new_tabstop]
Replace all sequences of white-space containing a
<Tab> with new strings of white-space using the new
tabstop value given. If you do not...
Filter LogCat to get only the messages from My Application in Android?
...can do: adb logcat | findstr com.example.package
– jj_
Oct 31 '15 at 2:25
8
Just a minor change t...
How can I calculate the difference between two dates?
...fference between two dates in days.
#1. Using Calendar's dateComponents(_:from:to:) method
import Foundation
let calendar = Calendar.current
let startDate = calendar.date(from: DateComponents(year: 2010, month: 11, day: 22))!
let endDate = calendar.date(from: DateComponents(year: 2015, month: ...
Can we delete an SMS in Android before it reaches the inbox?
...ndroid 1.6, incoming SMS message broadcasts (android.provider.Telephony.SMS_RECEIVED) are delivered as an "ordered broadcast" — meaning that you can tell the system which components should receive the broadcast first.
If you define an android:priority attribute on your SMS-listening <intent-fi...
Can I install Python 3.x and 2.x on the same Windows computer?
... quick search on Google, here is the Windows solution:
#!c:/Python/python3_6.exe -u
Same thing: in front of your script.
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jQuery AJAX cross domain
...lement2",array("element31","element32"));
$arr['name'] = "response";
echo $_GET['callback']."(".json_encode($arr).");";
?>
The echo might be wrong, it's been a while since I've used php. In any case you need to output callbackName('jsonString') notice the quotes. jQuery will pass it's own callb...
Convert HTML to NSAttributedString in iOS
...ttribute: NSNumber(unsignedInteger:NSUTF8StringEncoding)]
dispatch_async(dispatch_get_main_queue()) {
if let attributedString = try? NSAttributedString(data: data, options: options, documentAttributes: nil) {
completionBlock(attributedString)
} else {...