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Adding a parameter to the URL with JavaScript
...tion, but that depends completely on the length of the querystring and the index of any match
the slow regex method I benchmarked against for completions sake (approx +150% slower)
function insertParam2(key,value)
{
key = encodeURIComponent(key); value = encodeURIComponent(value);
var s...
Xcode stuck on Indexing
...g for 2 months stopped working for no reason because Xcode got stucked on "Indexing". I can't Build the project anymore. If I try to build, Xcode freezes and I have to force quit. This happens only with this project.
...
How to automatically generate a stacktrace when my program crashes
...does not contain a field named eip. There is now an array that needs to be indexed, uc_mcontext.gregs[REG_EIP] is the equivalent.
– mmlb
Dec 14 '12 at 14:57
...
Open a URL in a new tab (and not a new window)
...Question : I set url without protocol ( for example my.site.com/Controller/Index). As result i get new window (tab) by url such as url of current page (from where i use function OpenInNewTab) plus passed into function url. With protocol window opens by correct link. Why?
– user...
How to best display in Terminal a MySQL SELECT returning too many fields?
...mple, if you define the delimiter as X, you will be unable to use the word INDEX in statements."
– Benjamin
Oct 9 '15 at 8:57
...
Find object by id in an array of JavaScript objects
...ing function. Otherwise undefined is returned.
If you want to find its index instead, use findIndex():
myArray.findIndex(x => x.id === '45');
From MDN:
The findIndex() method returns the index of the first element in the array that satisfies the provided testing function. Otherwise -1 ...
MongoDb query condition on comparing 2 fields
...irly slow (has to execute Javascript code on every record) so combine with indexed queries if you can.
db.T.find( { $where: function() { return this.Grade1 > this.Grade2 } } );
or more compact:
db.T.find( { $where : "this.Grade1 > this.Grade2" } );
UPD for mongodb v.3.6+
you can use $expr as...
How to create a cron job using Bash automatically without the interactive editor?
...w cron into cron file
echo "00 09 * * 1-5 echo hello" >> mycron
#install new cron file
crontab mycron
rm mycron
Cron line explaination
* * * * * "command to be executed"
- - - - -
| | | | |
| | | | ----- Day of week (0 - 7) (Sunday=0 or 7)
| | | ------- Month (1 - 12)
| | --------- Day of...
SQL Server - When to use Clustered vs non-Clustered Index?
I know primary differences between clustered and non clustered indexes and have an understanding of how they actually work. I understand how clustered and non-clustered indexes improve read performance. But one thing I am not sure is that what would be the reasons where I would choose one over the o...
conditional unique constraint
...
Behold, the filtered index. From the documentation (emphasis mine):
A filtered index is an optimized nonclustered index especially suited to cover queries that select from a well-defined subset of data. It uses a filter predicate to index a p...