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How can I determine if a variable is 'undefined' or 'null'?
...ed Jul 20 '17 at 20:11
temporary_user_name
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answered Apr 15 '10 at 18:14
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How to filter logcat in Android Studio?
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I MADE A VIDEO TUTORIAL TO SHOW YOU HOW= https://youtu.be/xw2qE5ko_9I
Give your log a name. I called mine "wawa".
In Android Studio, go to Android-> Edit Filter Configurations
Then type in the name you gave the logs. In my case, it's called "wawa". Here are some examples of the ...
Display image as grayscale using matplotlib
...If you want to display the inverse grayscale, switch the cmap to cmap='gray_r'.
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Check that Field Exists with MongoDB
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Suppose we have a collection like below:
{
"_id":"1234"
"open":"Yes"
"things":{
"paper":1234
"bottle":"Available"
"bottle_count":40
}
}
We want to know if the bottle field is present or not?
Ans:
db.products.f...
How do I Search/Find and Replace in a standard string?
...oldStr,
const std::string& newStr)
{
std::string::size_type pos = 0u;
while((pos = str.find(oldStr, pos)) != std::string::npos){
str.replace(pos, oldStr.length(), newStr);
pos += newStr.length();
}
}
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File name? Path name? Base name? Naming standard for pieces of a path
... stem. References: doc.rust-lang.org/std/path/struct.Path.html#method.file_stem , llvm.org/docs/doxygen/html/… , boost.org/doc/libs/1_60_0/libs/filesystem/doc/…
– wisbucky
Mar 17 '16 at 20:53
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Installing pip packages to $HOME folder
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This looks very insteresting. easy_install comes installed in Mac OS X by default, so I would have only pip installed outside the $HOME folder.
– Somebody still uses you MS-DOS
Aug 22 '11 at 14:08
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How do I escape a percentage sign in T-SQL?
... You can escape also the underscore wildcard character too: [_]. How do you escape the open square bracket then? Like this: [[]. sqlserver2000.databases.aspfaq.com/…
– Csaba Toth
Apr 3 '14 at 18:25
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Android emulator shows nothing except black screen and adb devices shows “device offline”
... Works fantastic. If emulator is built from source (android pie aosp_x86_64-userdebug in my case), whenever executing root directory make command, the emulator need to be launched with -wipe-data argument to make it boot correctly.
– yc2986
Jan 13 '19 at...
How do I search an SQL Server database for a string?
... Asked SQL Server Questions And Their Answers:
CREATE PROCEDURE FindMyData_String
@DataToFind NVARCHAR(4000),
@ExactMatch BIT = 0
AS
SET NOCOUNT ON
DECLARE @Temp TABLE(RowId INT IDENTITY(1,1), SchemaName sysname, TableName sysname, ColumnName SysName, DataType VARCHAR(100), DataFound BIT)
...