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Why cast unused return values to void?
... to explicitly show other "developers" that you know this function returns but you're explicitly ignoring it.
This is a way to ensure that where necessary error codes are always handled.
I think for C++ this is probably the only place that I prefer to use C-style casts too, since using the full st...
Add default value of datetime field in SQL Server to a timestamp
I've got a table that collects forms submitted from our website, but for some reason, when they created the table, they didn't put a timestamp in the table. I want it to enter the exact date and time that the record was entered.
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What are the -Xms and -Xmx parameters when starting JVM?
...ecifies the initial memory allocation pool.
This means that your JVM will be started with Xms amount of memory and will be able to use a maximum of Xmx amount of memory. For example, starting a JVM like below will start it with 256 MB of memory and will allow the process to use up to 2048 MB of m...
How to prevent IFRAME from redirecting top-level window
Some websites have code to "break out" of IFRAME enclosures, meaning that if a page A is loaded as an IFRAME inside an parent page P some Javascript in A redirects the outer window to A .
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IntelliJ show JavaDocs tooltip on mouse over
In Eclipse, when hovering over a method, variable, etc. a tooltip is displayed with the corresponding JavaDocs. Is there such a feature in IntelliJ?
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【最全】CSS响应式布局的5种实现方式 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...t、width 属性的百分比依托于父标签的宽高。但是 padding、border、margin 等属性的情况又不一样
1、子元素的 top 和 bottom 如果设置百分比，则相对于直接非 static 定位（默认定位）的父元素的高度，同样，子元素的 left 和 right 如果...
How do I check if a directory exists? “is_dir”, “file_exists” or both?
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Both would return true on Unix systems - in Unix everything is a file, including directories. But to test if that name is taken, you should check both. There might be a regular file named 'foo', which would prevent you from c...
How do I determine if my python shell is executing in 32bit or 64bit?
...)'
32
$ python-64 -c 'import struct;print( 8 * struct.calcsize("P"))'
64
BTW, you might be tempted to use platform.architecture() for this. Unfortunately, its results are not always reliable, particularly in the case of OS X universal binaries.
$ arch -x86_64 /usr/bin/python2.6 -c 'import sys,pl...
Command substitution: backticks or dollar sign / paren enclosed? [duplicate]
What's the preferred way to do command substitution in bash?
3 Answers
3
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How to escape single quotes in MySQL
How do I insert a value in MySQL that consist of single or double quotes. i.e
16 Answers
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