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Closing Database Connections in Java
...with them, something like that:
Connection conn = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
// Do stuff
...
} catch (SQLException ex) {
// Exception handling stuff
...
} finally {
if (rs != null) {
try {
rs.close();
} catch (SQLE...
Can I get “&&” or “-and” to work in PowerShell?
.../27: The &&operator is now available for PowerShell 7 Preview 5+:
PS > echo "Hello!" && echo "World!"
Hello!
World!
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How do I get the current username in Windows PowerShell?
...ect as argument 2.
Usage:
$cred = Get-Credential UserTo.RunAs
Run-AsUser.ps1 "whoami; pause" $cred
Run-AsUser.ps1 "[System.Security.Principal.WindowsIdentity]::GetCurrent().Name; pause" $cred
Contents of Run-AsUser.ps1 script:
param(
[Parameter(Mandatory=$true)]
[string]$script,
[Paramete...
Does PowerShell support constants?
...rom http://poshcode.org/4063
function Set-Constant {
<#
.SYNOPSIS
Creates constants.
.DESCRIPTION
This function can help you to create constants so easy as it possible.
It works as keyword 'const' as such as in C#.
.EXAMPLE
PS C:\> Set-Constan...
Oracle SQL Query for listing all Schemas in a DB
...as, their ID's and date created in DB :
USERNAME USER_ID CREATED
------------------------------ ---------- ---------
SCHEMA1 120 09-SEP-15
SCHEMA2 119 09-SEP-15
SCHEMA3 118 09-SEP-15
...
记录一些Mac OS X技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...es -bool false
killall Finder
修改终端的提示文字
环境变量PS1就是终端的提示文字格式，默认为“\h:\W \u\$”，可以用echo来查看：
echo $PS1
PS2则是换行后的提示符，默认为“>”。
部分可使用的格式有（完整的可以运行man bash，...
Sibling package imports
...
@actual_panda Setting __packages__ helps if you want absolute path such as examples.api to work iirc (but it has been a long time since I last did that) and checking that package is not None was mostly a failsafe for weird situations and futureproofing.
...
Setting Windows PowerShell environment variables
...our profile to initiate the
settings. On startup, PowerShell will run any .ps1
files it finds in the WindowsPowerShell directory under
My Documents folder. Typically you have a profile.ps1
file already there. The path on my computer is
C:\Users\JaredPar\Documents\WindowsPowerShell\profile.ps1
...
How does deriving work in Haskell?
... -- build 'funcName parm1 parm2 parm3 ...
in appsE $ (varE $ mkName headFunc):funcName:vars -- put it all together
-- equivalent to 'funcStr where funcStr CONTAINS the name to be returned
makeName funcStr = (appE (varE (mkName "mkName")) (litE $ ...
What's the difference between “Write-Host”, “Write-Output”, or “[console]::WriteLine”?
...if I'm wrong, but I believe Write-Output is the default e.g. if you have a PsObject and you just spit it out to the screen by doing this $object it will actually do the same thing as this Write-Output $object. Might be worth mentioning
– Kolob Canyon
Aug 22 '18...