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MongoDB drop every database
...
Save this to drop_all_dbs.js:
var databases = db.getMongo().getDBNames()
for(var i in databases){
db = db.getMongo().getDB( databases[i] );
if(db.getName() == "admin" || db.getName() == "local"){
print("skipping db " + db.get...
How to Remove ReadOnly Attribute on File Using PowerShell?
...
Thanks! This worked for me: dir . -r *.cs | % { $_.fullname } | % { attrib -r $_ }
– Cameron Taggart
Dec 7 '12 at 23:22
1
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NSIS学习笔记（持续更新） - C/C++ - 清泛网 - 专注C/C++及内核技术
...。
#include <windows.h>
#include <pluginapi.h> // nsis plugin
HWND g_hwndParent;
// To work with Unicode version of NSIS, please use TCHAR-type
// functions for accessing the variables and the stack.
void __declspec(dllexport) myFunction(HWND hwndParent, int string_size,
TCHAR *variable...
How to fix the flickering in User controls
...Params cp = base.CreateParams;
cp.ExStyle |= 0x02000000; // Turn on WS_EX_COMPOSITED
return cp;
}
}
There are many things you can do to improve painting speed, to the point that the flicker isn't noticeable anymore. Start by tackling the BackgroundImage. They can be really expensive ...
Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
... should remember that it is not C# source that executes but rather IL:
IL_0001: ldnull
IL_0002: stloc.0 // s
IL_0003: ldloc.0 // s
IL_0004: callvirt System.String.get_Length
IL_0009: call System.Console.WriteLine
It is the callvirt opcode that throws the NullReferenc...
Are PHP Variables passed by value or by reference?
...;) to the argument name in the function definition.
<?php
function add_some_extra(&$string)
{
$string .= 'and something extra.';
}
$str = 'This is a string, ';
add_some_extra($str);
echo $str; // outputs 'This is a string, and something extra.'
?>
...
Why do people put code like “throw 1; ” and “for(;;);” in front of json responses? [du
...that would betray the values written in object literals:
Object.prototype.__defineSetter__('x', function(x) {
alert('Ha! I steal '+x);
});
Then when a <script> was pointed at some JSON that used that property name:
{"x": "hello"}
the value "hello" would be leaked.
The way that arra...
Vertical (rotated) label in Android
... if(Gravity.isVertical(gravity) && (gravity&Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
setGravity((gravity&Gravity.HORIZONTAL_GRAVITY_MASK) | Gravity.TOP);
topDown = false;
}else
topDown = true;
}
@Override
protected void onMeasu...
Swap key with value JSON
...
you can use lodash function _.invert it also can use multivlaue
var object = { 'a': 1, 'b': 2, 'c': 1 };
_.invert(object);
// => { '1': 'c', '2': 'b' }
// with `multiValue`
_.invert(object, true);
// => { '1': ['a', 'c'], '2': ['b'] ...
Insert picture into Excel cell [closed]
...ble click on the button in order to get to the VBA Code -->
Sub Button1_Click()
Dim filePathCell As Range
Dim imageLocationCell As Range
Dim filePath As String
Set filePathCell = Application.InputBox(Prompt:= _
"Please select the cell that contains the reference path to ...