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Why is using “for…in” for array iteration a bad idea?
...5;
for (var x in a) {
// Shows only the explicitly set index of "5", and ignores 0-4
console.log(x);
}
/* Will display:
5
*/
Also consider that JavaScript libraries might do things like this, which will affect any array you create:
// Somewhere deep in your JavaScript...
URL encoding the space character: + or %20?
When is a space in a URL encoded to + , and when is it encoded to %20 ?
4 Answers
4
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How to find out the MySQL root password
...log --skip-networking
Then run mysql in a new terminal:
mysql -u root
And run the following queries to change the password:
UPDATE mysql.user SET authentication_string=PASSWORD('password') WHERE User='root';
FLUSH PRIVILEGES;
In MySQL 5.7, the password field in mysql.user table field was rem...
Why should I care about lightweight vs. annotated tags?
I switched from Subversion to Git as my day-to-day VCS last year and am still trying to grasp the finer points of "Git-think".
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Make footer stick to bottom of page correctly [duplicate]
...
The simplest solution is to use min-height on the <html> tag and position the <footer> with position:absolute;
Demo: jsfiddle and SO snippet:
html {
position: relative;
min-height: 100%;
}
body {
margin: 0 0 100px;
/* bottom = footer height */
p...
Batch file to delete files older than N days
...ll files older than 7 days in a batch file. I've searched around the web, and found some examples with hundreds of lines of code, and others that required installing extra command line utilities to accomplish the task.
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.NET WPF Remember window size between sessions
...ifferent type or structure will be needed.
Initialise the first two to 0 and the second two to the default size of your application, and the last one to false.
Create a Window_OnSourceInitialized event handler and add the following:
this.Top = Properties.Settings.Default.Top;
this.Left = Propert...
What is the --save option for npm install?
I saw some tutorial where the command was:
11 Answers
11
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How to see if an NSString starts with a certain other string?
...Why 5? This is not an NSArray... Index 4 is the 4th character not the 5th! And have you EVER seen Http or hTtP? Case sensitive is not relevant. Also the question was about checking if the string begins with http not about the string being shorter than 4 characters. hasPrefix: is better but this work...
Clearing all cookies with JavaScript
...ter experimenting, I found that a site can have only one cookie without =, and then it is a nameless cookie, you get its value actually. So if eqPos == 1, you should do name = "" instead, to erase the nameless value.
– PhiLho
Oct 7 '08 at 19:56
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