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What's the difference between VARCHAR and CHAR?
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CHAR
Used to store character string value of fixed length.
The maximum no. of characters the data type can hold is 255 characters.
It's 50% faster than VARCHAR.
Uses static memory allocation.
VARCHAR
Used to store variable length alphanumeric data.
T...
How to pass the password to su/sudo/ssh without overriding the TTY?
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About ssh, have you tried passing password in connection string? like nonroot:yourpassword@hostname.com? Of course things are much easier if you use key auth and key manager.
– klh
Jan 4 '15 at 10:54
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How to retrieve checkboxes values in jQuery
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You can also return all selected checkboxes value in comma separated string.
This will also make it easier for you when you send it as a parameter to SQL
Here is a sample that return all selected checkboxes values that have the name "chkboxName" in comma separate string
And here is the javas...
Can inner classes access private variables?
...ss. You have to make the parent child relationship manually.
#include <string>
#include <iostream>
class Outer
{
class Inner
{
public:
Inner(Outer& x): parent(x) {}
void func()
{
std::string a = "myconst1";
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Make column not nullable in a Laravel migration
... @Musa Apparently you can set a column nullable (ex: $table->string('colmn', 255)->nullable()->change();) but the reverse doesn't appear to work ($table->string('colmn', 255)->change();), so you still need to use raw db queries for this
– Luís Cruz
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Gradle: Execution failed for task ':processDebugManifest'
...y because I had a duplicated meta data tag pulling the application ID from strings.xml for use with parse. No parse related errors but that meta data caused the crash, I actually didnt see this error detail until I opened the gradle console tab in android studio v. 2.1.1
– nat...
The property 'value' does not exist on value of type 'HTMLElement'
...t = document.getElementById('greet') as HTMLInputElement
const inputValue: string = inputElement.value
Documentation from Typescriptlang:
TypeScript - Basic Types - Type assertions
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impro...
AngularJS-Twig conflict with double curly braces
...}}
You should use single quotes, not double quotes. Double quotes enable string interpolation by Twig so you have to be more careful with the contents, especially if you are using expressions.
If you still hate seeing all those curly braces, you can also create a simple macro to automate the pr...
android on Text Change Listener
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check String before set anothe
Using R to list all files with a specified extension
...- list.files(pattern = "\\.dbf$")
$ at the end means that this is end of string. "dbf$" will work too, but adding \\. (. is special character in regular expressions so you need to escape it) ensure that you match only files with extension .dbf (in case you have e.g. .adbf files).
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