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Better way to check variable for null or empty string?
Since PHP is a dynamic language what's the best way of checking to see if a provided field is empty?
10 Answers
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Get a random item from a JavaScript array [duplicate]
...tion if you want: npmjs.com/package/lodash.sample
– XåpplI'-I0llwlg'I -
Dec 4 '15 at 11:32
4
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Move all files except one
... empties the whole Old -directory. What is wrong?
– Léo Léopold Hertz 준영
Mar 22 '09 at 3:28
5
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Understanding ibeacon distancing
... basic concept of how distancing with ibeacon (beacon/ Bluetooth-lowenergy/BLE) can work. Is there any true documentation on how far exactly an ibeacon can measure. Lets say I am 300 feet away...is it possible for an ibeacon to detect this?
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How to format numbers as currency string?
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@JuliendePrabère Please give an example of a long number which doesn't work with this approach.
– VisioN
Mar 25 '14 at 10:53
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通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...持以下各种类型的限制：所创建的内核文件的大小、进程数据块的大小、Shell 进程创建文件的大小、内存锁住的大小、常驻内存集的大小、打开文件描述符的数量、分配堆栈的最大大小、CPU 时间、单个用户的最大线程数、Shell ...
Capitalize words in string [duplicate]
... This doesn't seem to work for nordic characters ä, ö, and å. For example päijät-häme becomes PäIjäT-HäMe
– Markus Meskanen
Dec 15 '16 at 12:18
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MFC CString::Format()函数详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...磁盘空间使用率输出到静态文本进行显示，需要用到指定数据精度，这已经超出以前我对Format的了解了！也让我想要学习Format的完整功能！
下面是我对我从网上收集到的资料的整理：
函数声明
function Format(const Format: string; cons...
阿里双11大型项目管理怎么玩？ - 项目管理 - 清泛网 - 专注C/C++及内核技术
...可参考的、可量化的项目管理工具帮助企业透明化沟通、数据化沉淀？
上图表格为某研发童鞋工作周报记录
2016年菜鸟双11项目集管理也遇到了这样的痛点需求：如何把266个项目、3大军团、覆盖近600多人的大型项目集有...
import module from string variable
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importlib should be avaliable on pypi for < python2.7
– Jeffrey Jose
Aug 19 '12 at 12:12
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