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Default value in Doctrine
...can use:
<?php
/**
* @Entity
*/
class myEntity {
/**
* @var string
*
* @Column(name="myColumn", type="string", length="50")
*/
private $myColumn = 'myDefaultValue';
...
}
PHP-level default values are preferred as these are also properly available on newly crea...
Selecting a row of pandas series/dataframe by integer index
...operator, [] is to select columns.
When the indexing operator is passed a string or integer, it attempts to find a column with that particular name and return it as a Series.
So, in the question above: df[2] searches for a column name matching the integer value 2. This column does not exist and a ...
Null vs. False vs. 0 in PHP
...ot found anything, but 0 if it has found something at the beginning of the string !
<?php
// pitfall :
if (strrpos("Hello World", "Hello")) {
// never exectuted
}
// smart move :
if (strrpos("Hello World", "Hello") !== False) {
// that works !
}
?>
And of course, if you deal with ...
What is the purpose of “return await” in C#?
...int It really doesn't compile. Assuming the return type of SecondAwait is `string, the error message is: "CS4016: Since this is an async method, the return expression must be of type 'string' rather than 'Task<string>'".
– svick
Nov 23 '16 at 12:17
...
How do getters and setters work?
...utorial is not really required for this. Read up on encapsulation
private String myField; //"private" means access to this is restricted
public String getMyField()
{
//include validation, logic, logging or whatever you like here
return this.myField;
}
public void setMyField(String value)
...
How to do what head, tail, more, less, sed do in Powershell? [closed]
... typed structure, eg. dates remain DateTime instances – rather than just strings, which each command needs to parse itself, much of sed and other such programs are redundant.
share
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improve this ...
.trim() in JavaScript not working in IE
I tried to apply .trim() to a string in one of my JavaScript programs. It's working fine under Mozilla, but an error displays when I try it in IE8. Does anyone know what is going on here? Is there anyway I can make it work in IE?
...
How to properly URL encode a string in PHP?
... this rule always the empirical one? I mean, when I need to encode a query string I always use urldecode. Then, what about the URI path (e.g. /a/path with spaces/) and URI fragment (e.g. #fragment). Should I always use rawurldecode for these two?
– tonix
Sep 12...
Understanding implicit in Scala
...icit Int!
example:
// probably in a library
class Prefixer(val prefix: String)
def addPrefix(s: String)(implicit p: Prefixer) = p.prefix + s
// then probably in your application
implicit val myImplicitPrefixer = new Prefixer("***")
addPrefix("abc") // returns "***abc"
Implicit conversions
...
How to automatically generate a stacktrace when my program crashes
...gnal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ucontext.h>
#include <unistd.h>
/* This structure mirrors the one found in /usr/include/asm/ucontext.h */
typedef struct _sig_ucontext {
unsigned long uc_flags;
ucontext_t *uc_...