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Create an array with same element repeated multiple times
...return a;
}
It doubles the array in each iteration, so it can create a really large array with few iterations.
Note: You can also improve your function a lot by using push instead of concat, as concat will create a new array each iteration. Like this (shown just as an example of how you can wor...
Why do you not use C for your web apps?
...rogramming can't be secure and fast, but it is more susceptible to harsher errors.
– Jordan
Jun 21 '10 at 0:56
3
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In which case do you use the JPA @JoinTable annotation?
... recent versions of Hibernate refuse to start up by printing the following error:
org.hibernate.AnnotationException:
Associations marked as mappedBy must not define database mappings
like @JoinTable or @JoinColumn
Let's pretend that you have an entity named Project and another entity na...
Get ID of last inserted document in a mongoDB w/ Java driver
...h MongoDB plainly auto-generates ObjectId's. However, your solution of manually creating an ObjectId does work, and thanks for this option!
– Apophenia Overload
Dec 4 '12 at 8:39
...
PHP Session Security
...or maintaining responsible session security with PHP? There's information all over the web and it's about time it all landed in one place!
...
How to modify a global variable within a function in bash?
...n the a..
This does not only look ugly, it also is much to type, so it is error prone. Just one single mistake and you are doomed, right?
Well, we are at shell level, so you can improve it. Just think about an interface you want to see, and then you can implement it.
Augment, how the shell proc...
How to do parallel programming in Python?
...
Unfortunately this ends in an ` unhashable type: 'list'` error
– The Bndr
Jun 10 '15 at 14:55
in add...
Does PostgreSQL support “accent insensitive” collations?
...nstall once per database with:
CREATE EXTENSION unaccent;
If you get an error like:
ERROR: could not open extension control file
"/usr/share/postgresql/<version>/extension/unaccent.control": No such file or directory
Install the contrib package on your database server like instructed i...
Should I hash the password before sending it to the server side?
...atly however, and should be used in any authenticated session.
There is really no need to know what an original password is. All that is required is a reliable way to generate (and reliably re-generate) an authentication "key" based on the original text chosen by the user. In an ideal world this ...
Quickly reading very large tables as dataframes
...oo object it tries to fit it on the memory. If it's too big it produces an error. And if the result of the zoo object (for example an aggregation of two series) is also too it would need to be a sql or ff object too.
– skan
Apr 3 '13 at 14:03
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