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'str' object does not support item assignment in Python
I would like to read some characters from a string and put it into other string (Like we do in C).
7 Answers
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What is Cache-Control: private?
...e in the same 15-second window will all get the same contents - all served from close cache. Performance win for everyone.
The virtue of adding Cache-Control: max-age is that the browser doesn't even have to perform a conditional request.
if you specified only Last-Modified, the browser has to pe...
How are multi-dimensional arrays formatted in memory?
...ess the array correctly):
warning: passing argument 1 of ‘function1’ from incompatible pointer type
Because a 2D array is not the same as int **. The automatic decaying of an array into a pointer only goes "one level deep" so to speak. You need to declare the function as:
void function2(i...
How can you sort an array without mutating the original array?
...nst sorted = [...arr].sort();
the spread-syntax as array literal (copied from mdn):
var arr = [1, 2, 3];
var arr2 = [...arr]; // like arr.slice()
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator
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How do you downgrade rubygems?
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This worked for me when downgrading from 1.5.2 to 1.4.2 because of old rails version:
sudo gem update --system 1.4.2
More information about downgrading/upgrading rubygems: https://github.com/rubygems/rubygems/blob/master/UPGRADING.md
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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
... note
We know that the standard says undefined behavior is unpredictable from the note that come with the definition which says:
[ Note: Undefined behavior may be expected when this International
Standard omits any explicit definition of behavior or when a program
uses an erroneous constru...
Can you write nested functions in JavaScript?
...b(y) { // <-- inner function
return x + y; // <-- use variables from outer scope
}
return b; // <-- you can even return a function.
}
console.log(a(3)(4));
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How can I wait till the Parallel.ForEach completes
...l, Parallel.Foreach() will wait until all its branched tasks are complete. From the calling thread you can treat it as a single synchronous statement and for instance wrap it inside a try/catch.
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What is the difference between display: inline and display: inline-block?
...he browser here auto-detected the English part as LTR text and rendered it from left to right.
body {
text-align: right;
direction: rtl;
}
h2 {
display: block; /* just being explicit */
}
span {
display: inline;
}
<h2>
هذا عنوان طويل
<span>one...
How to hide the title bar for an Activity in XML with existing custom theme
...de note, the XML method is much safer and it also separates page structure from your code, (which is the entire purpose of the XMLs in the first place.)
– b1nary.atr0phy
Feb 16 '12 at 18:57
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