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Counting Line Numbers in Eclipse [closed]
...ch
Check the Regular expression box.
Use this expression:
\n[\s]*
Select whatever file types (*.java, *.xml, etc..) and working sets are appropriate for you.
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Why can't R's ifelse statements return vectors?
...urns a value with the same
shape as test which is filled with
elements selected from either yes or
no depending on whether the element
of test is TRUE or FALSE.
Since you are passing test values of length 1, you are getting results of length 1. If you pass longer test vectors, you will get...
嵌套块验证失败：未知的代码块类型: procedures_ifreturn，已拒绝添加 - AI...
...部分已修复导入ble：Cannot read properties of undefined (reading 'selectedComponents')✓ 代码块已整理 但是没有效果❌ 失败 1 项：
• 代码块添加失败，工作区已恢复: Cannot read properties of undefined (reading 'length')[
{
"action": "ADD_BLOCK",
"x...
How do you get the current time of day?
...yle - not quite accurate. ToShortTimeString returns the time in the user's selected short time format, as specified in the region settings of Windows.
– BlackWasp
Jul 5 '12 at 23:22
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Android Studio: Default project directory
... Settings > Project Opening > Default Directory
Open 'Preferences'
Select System Settings -> Project Opening
Set 'Default Directory' where you want.
It worked for me. I tried Android Studio 3.5.
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Where is svcutil.exe in Windows 7?
...in svcutil.exe
Wait for results to populate
Right click on svcutil.exe and Select 'Open file location'
Copy Windows explorer path
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Whether a variable is undefined [duplicate]
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jQuery.val() and .text() will never return 'undefined' for an empty selection. It always returns an empty string (i.e. ""). .html() will return null if the element doesn't exist though.You need to do:
if(page_name != '')
For other variables that don't come from something like jQuery.val(...
How do I remove  from the beginning of a file?
...
Open your file in Notepad++. From the Encoding menu, select Convert to UTF-8 without BOM, save the file, replace the old file with this new file. And it will work, damn sure.
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Removing pip's cache?
...urge removes all the wheel files in the cache.
pip cache remove matplotlib selectively removes files related to a matplotlib from the cache.
In summary, pip provides a lot of ways to tweak how it uses the cache:
pip install --no-cache-dir <package>: install a package without using the cache...
Where does Chrome store extensions?
...a reference to its local paths, they are left in the place where there are selected from in all Operating Systems.
Ex: If i load a unpacked Extension from E:\Chrome Extension the unpacked Extension is still in the same location
Storage Location for Packed Extensions
Navigate to chrome://version/ ...