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Common programming mistakes for Clojure developers to avoid [closed]
...raditional Java hexadecimal values via the 0x prefix. You can also use any base between 2 and 36 by using the "base+r+value" notation, such as 2r101010 or 36r16 which are 42 base ten.
Trying to return literals in an anonymous function literal
This works:
user> (defn foo [key val]
{key va...
Unique Constraint in Entity Framework Code First
...ern you can use with your code-first setup, though admittedly it's not database agnostic:
public class MyRepository : DbContext {
public DbSet<Whatever> Whatevers { get; set; }
public class Initializer : IDatabaseInitializer<MyRepository> {
public void InitializeDatabas...
How to edit one specific row in Microsoft SQL Server Management Studio 2008?
...erver Management Studio 2008, is there a secret to be able to edit one row based on a key?
3 Answers
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ETag vs Header Expires
...t to do is use BOTH headers - set the Expires header to a reasonable value based on how often the content changes. Then configure ETags to be sent so that when clients DO send a request to the server, it can more easily determine whether or not to send the file back.
One last note about ETag - if ...
CSS: 100% font size - 100% of what?
...account, either through the use of completely relative units or JavaScript-based dynamic resizing.
– Triynko
Feb 17 '15 at 22:54
1
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How to sum a variable by group
...umber of groups. Both data,table and dplyr will be quite a lot faster than base functions, however (can well be 100-1000 times faster for some operations). Also see here
– talat
Jan 23 '15 at 14:50
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Use of var keyword in C#
...ou don't use a text search to obtain class usage, you get the IDE to do it based on it's parse tree or however else it identifies the types of objects. Since we're talking about static typing, this will find everything but the anonymous types.
– Dustman
Sep 18 ...
BaseException.message deprecated in Python 2.6
I get a warning that BaseException.message is deprecated in Python 2.6 when I use the following user-defined exception:
8 A...
Difference between doseq and for in Clojure
...q [x [1 2 3]] (println x))
1
2
3
nil
If you want to build a new sequence based on other sequences, use for. If you want to do side-effects (printing, writing to a database, launching a nuclear warhead, etc) based on elements from some sequences, use doseq.
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How can I generate a unique ID in Python? [duplicate]
I need to generate a unique ID based on a random value.
8 Answers
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