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Rotating a two-dimensional array in Python
...ar what zip does, it will group elements from each input iterable based on index, or in other words it groups the columns.
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UITableView with fixed section headers
...ate design. (such as height of header for sections & height of cell at index path, sections)
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Generator Expressions vs. List Comprehension
...thing in get_some_stuff())
print gen()[:2] # generators don't support indexing or slicing
print [5,6] + gen() # generators can't be added to lists
Basically, use a generator expression if all you're doing is iterating once. If you want to store and use the generated results, then you're prob...
Is having an 'OR' in an INNER JOIN condition a bad idea?
...e WHERE parentId = 1 OR id = 2 will use a concatenation if both fields are indexed so theoretically there is nothing that would prevent doing the same thing in a loop. Whether SQL Server will build this plan actually or not, depends on very many factors, but I've never seen it built in real life.
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Rails detect if request was AJAX
... But its okey to be truthy, the zero means that the text is found at index 0, so its found (and its and ajax request). If text is not found the result is nil, which is false.
– Arnold Roa
Aug 24 '17 at 0:47
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Change Bootstrap tooltip color
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Here is tooltip code in boostrap...
.tooltip {
position: absolute;
z-index: 1070;
display: block;
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
font-size: 12px;
font-style: normal;
font-weight: normal;
line-height: 1.42857143;
text-align: left;
text-align: start;...
Unusual shape of a textarea?
...px solid lightBlue;
}
#box-a {
top: 10px;
background: #fff;
z-index: 1;
border-bottom: none;
}
#box-b {
top: 210px;
width: 400px;
overflow: auto;
margin-top: -2px;
}
The result:
For more info about regions - here's a good aricle: CSS3 regions: Rich page layout ...
Fetch the row which has the Max value for a column
...pend on the brand and version of RDBMS, as well as presence of appropriate indexes, data types, etc.
– Bill Karwin
Apr 19 '11 at 17:30
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How to create a protocol with methods that are optional?
...tTitle;
if ([self.dataSource respondsToSelector:@selector(titleForSegmentAtIndex:)]) {
thisSegmentTitle = [self.dataSource titleForSegmentAtIndex:index];
}
The respondsToSelector: method uses a selector, which refers to the identifier for a method after compilation. You can provide the correct...
Where is nodejs log file?
...pp.log,
" to the respective app.log created by you.
After this go to your index.js and include the following code in it.
const morgan = require('morgan');
const winston = require('./winston/config');
const express = require('express');
const app = express();
app.use(morgan('combined', { stream: wi...