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Why exactly is eval evil?
...s non-Lisp languages, because in those languages, eval() typically takes a string argument, and the user's input is typically spliced in. The user can include a quote in their input and escape into the generated code. But in Lisp, EVAL's argument is not a string, and user input cannot escape into th...
Why is iterating through a large Django QuerySet consuming massive amounts of memory?
...QuerySet in the following ways:
Iteration. A QuerySet is iterable, and it executes its database query the first time you iterate over it. For example, this will print the headline of all entries in the database:
for e in Entry.objects.all():
print e.headline
So your ten million ro...
Where and why do I have to put the “template” and “typename” keywords?
In templates, where and why do I have to put typename and template on dependent names?
What exactly are dependent names anyway?
...
php发送get、post请求的几种方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...// if not given use this script as referrer
$referrer="111";
// making string from $data
foreach($data as $key=>$value)
$values[]="$key=".urlencode($value);
$data_string=implode("&",$values);
// Find out which port is needed - if not given use standard (=80)
if(!isset($URL_Info["port"]...
How do I generate a constructor from class fields using Visual Studio (and/or ReSharper)?
...MTypeRefVoid, position, parentConstructor.Access)
Dim baseCall As String = ":base("
Dim separator As String = ""
For Each parameter As CodeParameter2 In parentConstructor.Parameters
ctor.AddParameter(parameter.Name, parameter.Type, -1)
baseCall += sep...
Go build: “Cannot find package” (even though GOPATH is set)
... lists places to look for Go code.
On Unix, the value is a colon-separated string.
On Windows, the value is a semicolon-separated string.
On Plan 9, the value is a list.
That is different from GOROOT:
The Go binary distributions assume they will be installed in /usr/local/go (or c:\Go under Window...
How to dynamically change header based on AngularJS partial view?
I am using ng-view to include AngularJS partial views, and I want to update the page title and h1 header tags based on the included view. These are out of scope of the partial view controllers though, and so I can't figure out how to bind them to data set in the controllers.
...
Order a List (C#) by many fields? [duplicate]
...ur object something like
public class MyObject : IComparable
{
public string a;
public string b;
virtual public int CompareTo(object obj)
{
if (obj is MyObject)
{
var compareObj = (MyObject)obj;
if (this.a.CompareTo(compareObj.a) == 0)
...
Loop through a Map with JSTL [duplicate]
I'm looking to have JSTL loop through a Map<String, String> and output the value of the key and it's value.
2 Answe...
MySQL case sensitive query [duplicate]
...ose is risky because it is literally going to compare the bytes of the two strings. If your default server/session charset does not match the charset of the column then accent characters will be considered not equal (i.e. ü in latin1 is 0xFC where as in utf8mb4 it is 0xC3Bc). 2) As Shenxian points ...