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How to generate string of a certain length to insert into a file to meet a file size criteria?
...e the following pseudocode:
string contentString = "Lorem Ipsum...";
for (int i = 0; i < fileSizeInKB / contentString.Length; i++)
//write contentString to file
if (fileSizeInKB % contentString.Length > 0)
// write remaining substring of contentString to file
Edit: If you're saving in ...
Why shouldn't I use mysql_* functions in PHP?
...f SQL extensions.
Suppressing deprecation warnings
While code is being converted to MySQLi/PDO, E_DEPRECATED errors can be suppressed by setting error_reporting in php.ini to exclude E_DEPRECATED:
error_reporting = E_ALL ^ E_DEPRECATED
Note that this will also hide other deprecation warnings,...
Redirect stderr and stdout in Bash
...
An extra hint: If you use this in a script, make sure it starts with #!/bin/bash rather than #!/bin/sh, since in requires bash.
– Tor Klingberg
Oct 1 '13 at 17:47
...
What is ModelState.IsValid valid for in ASP.NET MVC in NerdDinner?
...rsion issues (for example, passing a non-number for something which is an "int"). You can populate ModelState more fully based on whatever validation system you're using.
The sample DataAnnotations model binder will fill model state with validation errors taken from the DataAnnotations attributes o...
Proper use of 'yield return'
...se cases. You fail to mention the potential drawback that it keeps around intermediate state. If you have significant amounts of intermediate state (say a HashSet for duplicate elimination) then the use of yield can inflate your memory footprint.
– Kennet Belenky
...
How to use Class in Java?
... behind the scenes over at this question , so we all know that Vector<int[]> is a vector of integer arrays, and HashTable<String, Person> is a table of whose keys are strings and values Person s.
However, what stumps me is the usage of Class<> .
...
MySQL DISTINCT on a GROUP_CONCAT()
...e string are duplicated).
What we need to do here is to split each string into different rows, and we first need to create a numbers table:
CREATE TABLE numbers (n INT);
INSERT INTO numbers VALUES
(1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
then we can run this query:
SELECT
SUBSTRING_INDEX(
...
Method to Add new or update existing item in Dictionary
... in the framework - It is more tested and you are not the one who has to maintain the code
It is scalable: if you switch to multithreading your code is already prepared for it
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Escaping keyword-like column names in Postgres
...
Simply enclose year in double quotes to stop it being interpreted as a keyword:
INSERT INTO table (id, name, "year") VALUES ( ... );
From the documentation:
There is a second kind of identifier: the delimited identifier or
quoted identifier. It is formed by enclosing an...
What's the difference between `1L` and `1`?
...sume less memory. A double ("numeric") vector uses 8 bytes per element. An integer vector uses only 4 bytes per element. For large vectors, that's less wasted memory and less to wade through for the CPU (so it's typically faster).
Mostly this applies when working with indices.
Here's an example whe...