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What is SQL injection? [duplicate]
...erabilities because attackers can send values to an application that they know will be interpolated into a SQL string. By being very clever, they can manipulate the result of queries, reading data or even changing data that they shouldn't be allowed to do.
Example in PHP:
$password = $_POST['pass...
Difference between socket and websocket?
...kets in their implementation. Websockets are based on a standard protocol (now in final call, but not yet final) that defines a connection "handshake" and message "frame." The two sides go through the handshake procedure to mutually accept a connection and then use the standard message format ("fram...
Unable to simultaneously satisfy constraints, will attempt to recover by breaking constraint
...o do this:
DEBUG VIEW HIERARCHY (Do not recommend this way)
Since you know where to find unexpected constraints (PBOUserWorkDayHeaderView) there is a way to do this fairly well. Lets find UIView and NSLayoutConstraint in red rectangles. Since we know their id in memory it is quite easy.
Stop a...
Adding dictionaries together, Python [duplicate]
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@dimo414 Yes, my bad. I can't change it now however. I use ChainMap from collections to achieve this functionality now via dict(ChainMap(dic1, dic0)). However I have had to grab the source code from the chainmap pypi package for Python2.7. Notice how I switched the...
Angular.js ng-repeat across multiple tr's
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It's a bit after the fact now, but Angular 1.2 introduced the ng-repeat-start and ng-repeat-end directives to allow you to iterate over multiple elements.
– Onite
Nov 22 '13 at 15:03
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Is it possible to use Visual Studio on macOS?
... Core is cross-platform, as is the 'Visual Studio Code' editor, which also now supports debugging. Thus, if you install Visual Studio Code and .NET Core on a Mac in OS X you can quite freely edit and compile and run and debug and share your code with Visual Studio 2017 on a PC.
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Ruby, remove last N characters from a string?
...in a fast and readable manner.
The docs on the methods are here.
If you know what the suffix is, this is idiomatic (and I'd argue, even more readable than other answers here):
'abc123'.delete_suffix('123') # => "abc"
'abc123'.delete_suffix!('123') # => "abc"
It's even significantly...
How to get current time in milliseconds in PHP?
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Now there is a parameter for microtime function, if it is set to true, it's return the seconds and milliseconds since 1st of january in 1970, 0 hour 0 minutes 0 seconds as float. Here is an example: microtime(true) // 1553260...
How can I concatenate regex literals in JavaScript?
... + /*comment here */
segment_part + /* that was defined just now */
"another segment");
If you have two regular expression literals, you can in fact concatenate them using this technique:
var regex1 = /foo/g;
var regex2 = /bar/y;
var flags = (regex1.flags + regex2.flag...
Does the APNS device token ever change, once created?
...ferent devices with the exact same APNS token. I see in front of me right now an iPad 2, and an iPhone 3GS that have sent us the same token. Can anyone else confirm this behavior?
– DougW
Jun 23 '12 at 1:26
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