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Tricks to manage the available memory in an R session
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Ensure you record your work in a reproducible script. From time-to-time, reopen R, then source() your script. You'll clean out anything you're no longer using, and as an added benefit will have tested your code.
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Minimal web server using netcat
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From man for nc, -p description: It is an error to use this option in conjunction with the -l option
– sbeliakov
Nov 24 '16 at 14:59
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Styles.Render in MVC4
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This is talking about styles, not scripts. If you want to use bootstrap.min.js, just create a bundle like this: bundles.Add(new ScriptBundle("~/bundles/bootstrap").Include( "~/Scripts/bootstrap.min.js"));
– Xcalibur...
How do I make a batch file terminate upon encountering an error?
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+1 for the negative errorlevel check. Had a script silently fail because of a negative result.
– devstuff
Sep 16 '10 at 4:37
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Creating a new DOM element from an HTML string using built-in DOM methods or Prototype
...e> element is used to declare fragments of HTML that can be utilized in scripts. The element is represented in the DOM as a HTMLTemplateElement which has a .content property of DocumentFragment type, to provide access to the template's contents. This means that you can convert an HTML string to D...
CocoaPods Errors on Project Build
...red by Hlung's comment above, I realized that there were some dangling pod scripts that were attempting to run against some non-existent files. So I went to my target build phase, and deleted all the remaining phases that had anything to do with cocoa pods (and Hlung's comment he suggests deleting C...
Command line to remove an environment variable from the OS level configuration
...age (WM_SETTINGCHANGE). This can be accomplished with a simple PowerShell script. You could easily write one to do this, but I found one in Update Window Settings After Scripted Changes:
if (-not ("win32.nativemethods" -as [type])) {
add-type -Namespace Win32 -Name NativeMethods -MemberDefinit...
How to import load a .sql or .csv file into SQLite?
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If you are happy to use a (python) script then there is a python script that automates this at: https://github.com/rgrp/csv2sqlite
This will auto-create the table for you as well as do some basic type-guessing and data casting for you (so e.g. it will work ou...
转：postfix安装Q&A - 更多技术 - 清泛网 - 专注C/C++及内核技术
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Q：
[root@mail postfix]# /usr/sbin/postfix start
postfix/postfix-script: warning: not owned by postfix: /var/spool/postfix/hold
postsuper: fatal: scan_dir_push: open directory hold: Permission denied
postfix/postfix-script: fatal: Postfix integrity check failed!
呵呵权限问题...
How to track child process using strace?
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There is a perl script called strace-graph. Here is a version from github. It is packaged with crosstool-ng versions of compilers. It works for me even used cross platform.
ARM Linux box.
$ ./strace -f -q -s 100 -o app.trc -p 449
$ tftp...