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What does the construct x = x || y mean?
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It means the title argument is optional. So if you call the method with no arguments it will use a default value of "Error".
It's shorthand for writing:
if (!title) {
title = "Error";
}
This kind of shorthand trick with boolean expressions is common in Perl too. With the...
Printing object properties in Powershell
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Ugh! It still displays horizontally on the screen.... if any output goes outside your buffer it just puts .... I have a love hate with POSH
– Kolob Canyon
Jun 29 '17 at 22:50
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How do I change the cursor between Normal and Insert modes in Vim?
...ailable on any Vim instance compiled with the +syntax feature (which is usually the case).
– ib.
Jan 15 '14 at 5:52
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How to remove a package in sublime text 2
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If you installed with package control, search for "Package Control: Remove Package" in the command palette (accessed with Ctrl+Shift+P). Otherwise you can just remove the Emmet directory.
If you wish to use a custom caption to access c...
Check number of arguments passed to a Bash script
...nd regex matching.
The following example checks if arguments are valid. It allows a single argument or two.
[[ ($# -eq 1 || ($# -eq 2 && $2 == <glob pattern>)) && $1 =~ <regex pattern> ]]
For pure arithmetic expressions, using (( )) to some may still be better, but they ...
What's the best free C++ profiler for Windows? [closed]
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I tried working with it now, and didn't like it at all. I couldn't even understand how to get function's total time % (including the callees) which TrueTime could do fine 10 years ago.
– Pavel Radzivilovsky
Mar 13 '11 at 15:05
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How do I get a human-readable file size in bytes abbreviation using .NET?
... the OS? Windows still counts 1024 bytes as 1 KB and 1 MB = 1024 KB, Personally i wanna throw the KiB out the window and just count every thing using 1024?...
– Peter
Aug 8 '13 at 22:46
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Vsphere 6 集群上 安装 oracle rac 遇到的共享磁盘故障 - 数据库(内核) - ...
Vsphere 6 集群上 安装 oracle rac 遇到的共享磁盘故障10月28号 青岛项目中的oralce rac 出现死机的情况。故障现象：ORACLERAC 挂掉，虚拟机死机。DBA和现在负责的同事，重新安装系统和ORACL...
10月28号 青岛项目中的oralce rac 出现死机的情...
Determining complexity for recursive functions (Big O notation)
I have a Computer Science Midterm tomorrow and I need help determining the complexity of these recursive functions. I know how to solve simple cases, but I am still trying to learn how to solve these harder cases. These were just a few of the example problems that I could not figure out. Any help wo...
Placeholder Mixin SCSS/CSS
I'm trying to create a mixin for placeholders in sass.
6 Answers
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