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What is the logic behind the “using” keyword in C++?
...as is identical to typedef.
7.1.3.2
A typedef-name can also be introduced by an alias-declaration. The
identifier following the using keyword becomes a typedef-name and the
optional attribute-specifier-seq following the identifier appertains
to that typedef-name. It has the same semantics as if it ...
How to negate the whole regex?
...ot containing a string?
A regex to match a substring that isn’t followed by a certain other substring.
More examples
These are attempts to come up with regex solutions to toy problems as exercises; they should be educational if you're trying to learn the various ways you can use lookarounds (ne...
Purging file from Git repo failed, unable to create new backup
I tried to remove a file from my remote repo by running:
4 Answers
4
...
argparse store false if unspecified
...est.py
yields
Namespace(auto=False)
So it appears to be storing False by default.
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What should every programmer know about security? [closed]
... things have spent years being thought out, patched, updated, and examined by experts and hackers alike. You want to gain those advantages, not dismiss them by trying to reinvent the wheel.
Now, that's not to say you don't need to learn anything about security. You certainly need to know enough to ...
Batch script: how to check for admin rights
...et session >nul 2>&1
Run command
Hide visual output of command by
Redirecting the standard output (numeric handle 1 / STDOUT) stream to nul
Redirecting the standard error output stream (numeric handle 2 / STDERR) to the same destination as numeric handle 1
if %errorLevel% == 0
If ...
SQLite add Primary Key
I created a table in Sqlite by using the CREATE TABLE AS syntax to create a table based on a SELECT statement. Now this table has no primary key but I would like to add one.
...
How does “make” app know default target to build if no target is specified?
...
By default, it begins by processing the first target that does not begin with a . aka the default goal; to do that, it may have to process other targets - specifically, ones the first target depends on.
The GNU Make Manual c...
How can I make gdb save the command history?
...story entries is disabled".
set history remove-duplicates <count>
By default, gdb saves the history into the file ./.gdb_history in the current directory. If you want your command history not to depend on the directory you are in, also include:
set history filename ~/.gdb_history
...
invalid target release: 1.7
... machine, and it wasn't finding my $JAVA_HOME.
On a Mac, this is resolved by:
Right clicking on the module | Module Settings | Project
and adding the 1.7 SDK by selecting "New" in the Project SDK.
Then go to the main IntelliJ IDEA menu | Preferences | Maven | Runner
and select the correct JRE....