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Reference: Comparing PHP's print and echo
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What is the proper way to check if a string is empty in Perl?
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134
For string comparisons in Perl, use eq or ne:
if ($str eq "")
{
// ...
}
The == and != op...
CSS horizontal centering of a fixed div?
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168
left: 50%;
margin-left: -400px; /* Half of the width */
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How to redirect stderr and stdout to different files in the same line in script?
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Just add them in one line command 2>> error 1>> output
However, note that >> is for appending if the file already has data. Whereas, > will overwrite any existing data in the file.
So, command 2> error 1> output if you do not want to append.
Ju...
How do I undo “Scope to this” in Visual Studio 2012?
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515
Click the "Home" icon (third one by default, the one with a house pictogram) in the Solution ex...
Return number of rows affected by UPDATE statements
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138
CREATE PROCEDURE UpdateTables
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result set...
What does %~dp0 mean, and how does it work?
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818
Calling
for /?
in the command-line gives help about this syntax (which can be used outside F...
栈和队列的面试题Java实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...成对出现来考察。本文包含栈和队列的如下考试内容：（1）栈的创建（2）队列的创建（3）两个栈实现一...栈和队列：
面试的时候，栈和队列经常会成对出现来考察。本文包含栈和队列的如下考试内容：
（1）栈的创建
（2）...
What is the status of JSR 305?
...ode.
JSR 308 (annotations in new places) is included in java 8 under JEP 104.
As of 2017, JSR 305 (new annotations) continues to carry official status of “Dormant”. A question about it's status in the google group has been unanswered since 2010.
There is a reference implementation of the ...
Python strftime - date without leading 0?
...time , is there a way to remove the first 0 of the date if it's before the 10th, ie. so 01 is 1 ? Can't find a % thingy for that?
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