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How do I show the value of a #define at compile-time?
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As far as I know '#error' only will print strings, in fact you don't even need to use quotes.
Have you tried writing various purposefully incorrect code using "BOOST_VERSION"? Perhaps something like "blah[BOOST_VERSION] = foo;" will tell you ...
SQL - HAVING vs. WHERE
...the [country] filtering to the WHERE has you've suggested, the query would error from SELECT [country], as [country] is no longer included in the GROUP BY aggregation, thus cannot be selected.
– Nhan
Nov 8 '19 at 22:40
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How can I check if a directory exists in a Bash shell script?
...INK"
if [ -d "$SYMLINK" ]; then
rmdir "$SYMLINK"
fi
Will produce the error message:
rmdir: failed to remove `symlink': Not a directory
So symbolic links may have to be treated differently, if subsequent commands expect directories:
if [ -d "$LINK_OR_DIR" ]; then
if [ -L "$LINK_OR_DIR" ]...
Current time formatting with Javascript
... i format date = "2016/03/01 11:00" to date ="Sat Mar 01 2016 11:00:00 GMT+0530 (IST)"
– Vishal Singh
Feb 25 '16 at 7:27
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Unable to load Private Key. (PEM routines:PEM_read_bio:no start line:pem_lib.c:648:Expecting: ANY PR
... Oh my good God! THANK YOU! I would've never figured that out by trial and error, fixed the issue for me!
– Mikael Dyreborg Hansen
Apr 15 at 12:48
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Sequelize.js delete query?
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Shouldn't you use catch to catch the error instead of callback?
– Ahmed Ghrib
Feb 5 at 14:16
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VC菜单命令详解(文件打开、保存与关闭) - C/C++ - 清泛网 - 专注C/C++及内核技术
...射到CWinApp::OnFileOpen函数，它将执行以下几个步骤：
1、提示用户选择一个文件；
2、调用虚函数CDocument::OnOpenDocument，CDocument::OnOpenDocument打开文件，调用CDocument::DeleteContents，并且构造一个CArchive对象。随后调用document的Serialize函...
Install an apk file from command prompt?
...pk
if you have more than one device/emulator connected you will get this error
adb: error: connect failed: more than one device/emulator
- waiting for device - error: more than one device/emulator
to avoid that you can list all devices by below command
adb devices
you will get results l...
VC窗口刷新InvalidateRect和UpdateWindow - C/C++ - 清泛网 - 专注C/C++及内核技术
...对话框或消息框；菜单下拉出来，然后被释放；显示工具提示消息。
在某些情况下，Windows总是一定保存它所覆盖的显示区域，然后恢复它。这些情况是：鼠标光标穿越显示区域；图标拖过显示区域。
有时候应用也需要能够主...
Filter Java Stream to 1 and only 1 element
... Iterables.getOnlyElement would shorten these solutions and provide better error messages. Just as a tip for fellow readers who already use Google Guava.
– Tim Büthe
Oct 29 '15 at 15:09
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