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Why is “a” != “a” in C?
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GCC also has the options -fmerge-constants and -fno-merge-constants to enable/disable string and floating-point constant merging across translation units, though on some GCCs it seems that constant merging is always enabled regardless of that option.
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How can I get the current user's username in Bash?
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On the command line, enter
whoami
or
echo "$USER"
To save these values to a variable, do
myvariable=$(whoami)
or
myvariable=$USER
Of course, you don't need to make a variable since that is what the $USER variable is for.
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How to compare two NSDates: Which is more recent?
I am trying to achieve a dropBox sync and need to compare the dates of two files. One is on my dropBox account and one is on my iPhone.
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What is the best way to unit test Objective-C code?
...XCTest, which is similar to OCUnit, an Objective-C unit testing framework, and has full support for running XCTest-based unit tests as part of your project's build process. Xcode's unit testing support is described in the Xcode Overview: Using Unit Tests.
Back in the Xcode 2 days, I wrote a series...
不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...死了换个思路
第二种方法
由于我们的客户端都是LINUX 主机。所以打算利用linux 强大的route 功能
在主机A 上执行命令
route add -host 172.16.110.80 gw 172.16.100.253
route add -host 172.16.110.80 gw 172.16.100.254
在主机B 上执行命...
Java rounding up to an int using Math.ceil
...still return 4? 157/32 = 4.90625 , I need to round up, I've looked around and this seems to be the right method.
15 Answer...
Minimum and maximum value of z-index?
...r>) or
real number values (denoted by
<number>). Real numbers and
integers are specified in decimal
notation only. An <integer>
consists of one or more digits "0" to
"9". A <number> can either be an
<integer>, or it can be zero or
more digits followed by a ...
How can I read command line parameters from an R script?
I've got a R script for which I'd like to be able to supply several command-line parameters (rather than hardcode parameter values in the code itself). The script runs on Windows.
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Is it possible to start a shell session in a running container (without ssh)
I was naively expecting this command to run a bash shell in a running container :
15 Answers
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Split function equivalent in T-SQL?
...ike to know. Is there an error here? I wrote this code perhaps 6 years ago and it was working OK since when.
– XOR
Mar 30 '09 at 17:21
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