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理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...-vm:47388kB, anon-rss:3744kB, file-rss:80kB
httpd invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0, oom_score_adj=0
httpd cpuset=/ mems_allowed=0
Pid: 8911, comm: httpd Not tainted 2.6.32-279.1.1.el6.i686 #1
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Advantage of switch over if-else statement
... the average case) or simply build a jump-table (works without compares at all).
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Save An Image To Application Documents Folder From UIView On IOS
I have a UIImageView that allows a user to place and hold an image until it can be saved. The problem is, I can't figure out how to actually save and retrieve the image I've placed in the view.
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How to search file text for a pattern and replace it with a given value
...ull. This code is not fit for anything beyond a quick one-off script where all the data is backed up. For that reason, do NOT copy this code into your programs.
Here's a quick short way to do it.
file_names = ['foo.txt', 'bar.txt']
file_names.each do |file_name|
text = File.read(file_name)
ne...
Convert decimal to hexadecimal in UNIX shell script
...e=16; 123456" | bc. So the way to deal with arbitrary numbers of integers all on one line is to put each number on its own line: tr ' ' '\015' <input | bc (map blanks to newlines).
– Jonathan Leffler
Dec 25 '08 at 20:40
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How to disable UITextField editing but still accept touch?
I'm making a UITextField that has a UIPickerView as inputView . Its all good, except that I can edit by copy, paste, cut and select text, and I don't want it. Only the Picker should modify text field.
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Trigger a button click with JavaScript on the Enter key in a text box
... This worked for me due to fact that the inline method, instead of calling function with similar code in it, allows you to return false on the call and avoid postback. In my case the "click" method invokes a __doPostback async call and without the "return false;" would just reload the page.
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Reading a file line by line in Go
...since the OP asked to scan over a file, it would be trivial to first file, _ := os.Open("/path/to/file.csv") and then scan over the file handle: scanner := bufio.NewScanner(file)
– Evan Plumlee
Aug 18 '13 at 13:28
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一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
...: 0xf4767e
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“Connection for controluser as defined in your configuration failed” with phpMyAdmin in XAMPP
I have just installed XAMPP on my Windows XP machine, and I get an error saying:
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