remove unneeded static keyword

statics have a default static lifetime

src/cmd/apply.rs

@@ -6,7 +6,7 @@ use crate::select::SelectColumns;
 use crate::util;
 use crate::serde::Deserialize;
 
-static USAGE: &'static str = "
+static USAGE: &str = "
 Apply a series of unary functions to a given CSV column. This can be used to
 perform typical cleaning tasks and/or harmonize some values etc.
 
@@ -51,7 +51,7 @@ Common options:
  Must be a single character. (default: ,)
 ";
 
-static OPERATIONS: &'static [&'static str] = &[
+static OPERATIONS: &[&str] = &[
  "len",
  "lower",
  "upper",

src/cmd/behead.rs

@@ -3,7 +3,7 @@ use crate::config::{Delimiter, Config};
 use crate::util;
 use serde::Deserialize;
 
-static USAGE: &'static str = "
+static USAGE: &str = "
 Drop a CSV file's header.
 
 Usage:

src/cmd/explode.rs

@@ -4,7 +4,7 @@ use crate::select::SelectColumns;
 use crate::util;
 use serde::Deserialize;
 
-static USAGE: &'static str = "
+static USAGE: &str = "
 Explodes a row into multiple ones by splitting a column value based on the
 given separator.
 

src/cmd/foreach.rs

@@ -11,7 +11,7 @@ use crate::select::SelectColumns;
 use crate::util;
 use serde::Deserialize;
 
-static USAGE: &'static str = "
+static USAGE: &str = "
 Execute a bash command once per line in given CSV file.
 
 Deleting all files whose filenames are listed in a column:
@@ -81,6 +81,7 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
  let mut record = csv::ByteRecord::new();
  let mut output_headers_written = false;
 
+ #[cfg(target_family="unix")]
  while rdr.read_byte_record(&mut record)? {
  let current_value = &record[column_index];
 
@@ -99,7 +100,6 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
  return String::from_utf8(clean_piece.into_owned()).expect("encoding error");
  }).collect();
 
- #[cfg(target_family="unix")]
  if !args.flag_unify {
  let mut cmd = Command::new(prog)
  .args(cmd_args)

src/cmd/jsonl.rs

@@ -7,7 +7,7 @@ use crate::config::{Config};
 use crate::util;
 use serde::Deserialize;
 
-static USAGE: &'static str = "
+static USAGE: &str = "
 Converts a newline-delimited JSON file (.ndjson or .jsonl, typically) into
 a CSV file.
 

src/cmd/lua.rs

@@ -10,7 +10,7 @@ use serde::Deserialize;
 
 // TODO: options for boolean return coercion
 
-static USAGE: &'static str = r#"
+static USAGE: &str = r#"
 Create a new column, filter rows or compute aggregations by executing a Lua
 script of every line of a CSV file.
 

src/cmd/pseudo.rs

@@ -6,7 +6,7 @@ use crate::select::SelectColumns;
 use crate::serde::Deserialize;
 use crate::util;
 
-static USAGE: &'static str = "
+static USAGE: &str = "
 Pseudonymise the value of the given column by replacing them by an
 incremental identifier.
 

src/cmd/python.rs

@@ -41,7 +41,7 @@ class XSVRow(object):
 
 // TODO: options for boolean return coercion
 
-static USAGE: &'static str = r#"
+static USAGE: &str = r#"
 Create a new column, filter rows or compute aggregations by evaluating a python
 expression on every row of a CSV file.
 

src/cmd/replace.rs

@@ -7,7 +7,7 @@ use crate::select::SelectColumns;
 use crate::util;
 use serde::Deserialize;
 
-static USAGE: &'static str = "
+static USAGE: &str = "
 Replace occurrences of a pattern across a CSV file.
 
 You can of course match groups using parentheses and use those in