wildcard

问题 First I asked that: ftp directory listing timeout. Huge number of subdirs. I got the answer. Still because I can have hundred thousands of FTP objects in the directory it could take really long time to scan that. However I thought it might be possible to retrieve all the objects that begin with 'A' and then 'B' and so on... As it retrieves directories it could start processing them on the other thread without waiting till it gets the entire list. Is it possible to do FTP directory listing

问题 I have several columns in my databases with similar names. How do I select those based on the word they start with? Here's an example table layout: I tried selecting all info for a particular thing (food kind in this example) using $Food = "Vegetable"; mysql_query("SELECT `" . $Food . " %` FROM `Foods`"); but it didn't seem to work. Any help would be appreciated :-) EDIT: Apparently this wasn't clear from my example, but I already know all column's first words. The columns are always the same

问题 I have a directory, and inside it are files are named "a_id_XXX.zip" . How do check if a file exists given an id and File dir ? 回答1: Pass a FileFilter (coded here anonymously) into the listFiles() method of the dir File, like this: File dir = new File("some/path/to/dir"); final String id = "XXX"; // needs to be final so the anonymous class can use it File[] matchingFiles = dir.listFiles(new FileFilter() { public boolean accept(File pathname) { return pathname.getName().equals("a_id_" + id + "

问题 I'm building a portal for the organization I'm working at. The portal is a Wordpress site using Wampserver 2.5, intalled on a Win server 2008 R2. It's working fine and accesible from other machines over the intranet, thanks to the helpful and patient RiggsFolly. But now, I have changed it into a network of sites so that I can build sub-portals for the different departments in my organization. During that change Wordpress gave this warning message: Warning! Wildcard DNS may not be configured

问题 I have a class called Pattern, and within it two methods, equates and setwildcard. Equates returns the index in which a substring first appears in a string, and setwildcard sets a wild card character in a substring So p = Pattern('xyz') t = 'xxxxxyz' p.equates(t) Returns 4 Also p = Pattern('x*z', '*') t = 'xxxxxgzx' p.equates(t) Returns 4, because * is the wildcard and can match any letter within t, as long as x and z match. What's the best way to implement this? 回答1: It looks like you're

问题 I have been looking every where on the net and everyone seems to simply suggest an alternative like SUMPRODUCT , however, I want to use wildcards. Wildcards work fine in COUNTIF but not in other alternatives I have seen. How can I search every nth cell in a column and return a count of the number of times an exact substring is found (i.e. COUNTIF(range, string) , where range is every nth cell and string could be "*somestring" , "some string*" , "*somestring*" or "some?string" ) 回答1: Yes,

问题 Is it possible to have a wildcard in a column name specified in the WHERE clause? I want to select something but only if a bunch of columns match a certain value (1 in this case). For example: SELECT COUNT(id) FROM records WHERE *_check = 1 I have a bunch of columns that have _check as the suffix and it would be really nice to use something similar to the above code (which doesn't work). 回答1: You could query the information_schema to get the columns in one query SELECT column_name FROM

问题 I'm stuck on a piece of code that I mainly didn't write myself. I'm looking for a code that runs through all files with extension .dwg, and start with K_E , and have length 9. instinctively I used wildcards, but that doesn't work.. K_E??????.dwg would do the trick in my head..but doesn't. the reason I need this length, is that in deeper folders there are K_E??????xx.dwg and other files. The other files in subfolders can have a range of other names, the general idea is that I only want files

问题 Following this question and my answer and its comments I have a doubt. What is the proper way to reference dependencies in a Makefile ? Let me give an example considering this file: CXX = g++ CXXFLAGS = -stdlib=libc++ -std=c++17 WARNING := -Wall -Wextra PROJDIR := . SOURCEDIR := $(PROJDIR)/ SOURCES := $(wildcard $(SOURCEDIR)/*.cpp) OBJDIR := $(PROJDIR)/ OBJECTS := $(patsubst $(SOURCEDIR)/%.cpp,$(OBJDIR)/%.o,$(SOURCES)) DEPENDS := $(patsubst $(SOURCEDIR)/%.cpp,$(OBJDIR)/%.d,$(SOURCES)) #

问题 Following this question and my answer and its comments I have a doubt. What is the proper way to reference dependencies in a Makefile ? Let me give an example considering this file: CXX = g++ CXXFLAGS = -stdlib=libc++ -std=c++17 WARNING := -Wall -Wextra PROJDIR := . SOURCEDIR := $(PROJDIR)/ SOURCES := $(wildcard $(SOURCEDIR)/*.cpp) OBJDIR := $(PROJDIR)/ OBJECTS := $(patsubst $(SOURCEDIR)/%.cpp,$(OBJDIR)/%.o,$(SOURCES)) DEPENDS := $(patsubst $(SOURCEDIR)/%.cpp,$(OBJDIR)/%.d,$(SOURCES)) #